{"id":"CVE-2021-39152","aliases":["CLSA-2026-1783645396","DEBIAN-CVE-2021-39152","DLA-2769-1","DSA-5004-1","EUVD-2021-1941","GHSA-xw4p-crpj-vjx2","MGASA-2021-0474","OESA-2021-1337","RHSA-2021:3956","SUSE-SU-2021:3476-1","UBUNTU-CVE-2021-39152","USN-5946-1","openSUSE-SU-2021:1401-1","openSUSE-SU-2021:3476-1"],"status":"published","title":"A Server-Side Forgery Request vulnerability in XStream via HashMap unmarshaling","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","severity":{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.11377,"percentile":0.96022,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-502","CWE-918"],"published":"2021-08-23T18:20:10Z","modified":"2026-11-02T19:45:39Z","exploits":[{"source":"nuclei","id":"CVE-2021-39152","title":"XStream \u003c1.4.18 - Server-Side Request Forgery","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-39152.yaml"}],"fixes":[{"ecosystem":"Maven","package":"com.thoughtworks.xstream:xstream","fixed_in":["1.4.18"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"libxstream-java","fixed_in":["1.4.18-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libxstream-java","fixed_in":["1.4.18-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libxstream-java","fixed_in":["1.4.18-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"libxstream-java","fixed_in":["1.4.11.1-1+deb10u4build0.18.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"libxstream-java","fixed_in":["1.4.11.1-1ubuntu0.3"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"com.thoughtworks.xstream:xstream","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18"}]}]},{"source":"osv","ecosystem":"TuxCare:Maven","package":"com.thoughtworks.xstream:xstream","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.17"},{"fixed":"1.4.17-tuxcare.1"}]}],"versions":["1.4.17"],"bundled":15},{"source":"osv","ecosystem":"Debian:12","package":"libxstream-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libxstream-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libxstream-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"libxstream-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.11.1-1+deb9u4"}]}],"versions":["1.4.10-1","1.4.11-1","1.4.11.1-1","1.4.11.1-1+deb9u1","1.4.11.1-1+deb9u2","1.4.11.1-1+deb9u3","1.4.9-2","1.4.9-2+deb9u1"],"bundled":14},{"source":"osv","ecosystem":"Debian:10","package":"libxstream-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.11.1-1+deb10u3"}]}],"versions":["1.4.11.1-1","1.4.11.1-1+deb10u1","1.4.11.1-1+deb10u2"],"bundled":14},{"source":"osv","ecosystem":"Debian:11","package":"libxstream-java","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.15-3+deb11u1"}]}],"versions":["1.4.15-3"],"bundled":14},{"source":"osv","ecosystem":"Maven","package":"com.thoughtworks.xstream:xstream","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18"}]}],"versions":["0.1","0.2","0.3","0.5","0.6","1.0","1.0.1","1.0.2","1.1","1.1.1","1.1.2","1.1.3","1.2","1.2.1","1.2.2","1.3","1.3.1","1.4","1.4.1","1.4.10","1.4.10-java7","1.4.11","1.4.11-java7","1.4.11.1","1.4.12","1.4.12-java7","1.4.13","1.4.13-java7","1.4.14","1.4.14-java7","1.4.14-jdk7","1.4.15","1.4.16","1.4.17","1.4.2","1.4.3","1.4.4","1.4.5","1.4.6","1.4.7","1.4.8","1.4.9"]},{"source":"osv","ecosystem":"Mageia:8","package":"xstream","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18-1.mga8"}]}],"bundled":14},{"source":"osv","ecosystem":"Mageia:8","package":"xmlpull","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-1.mga8"}]}],"bundled":14},{"source":"osv","ecosystem":"Mageia:8","package":"mxparser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2-1.mga8"}]}],"bundled":14},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"xstream","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18-1.oe1"}]}],"bundled":14},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP2","package":"xstream","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.18-1.oe1"}]}],"bundled":14},{"source":"osv","ecosystem":"Red 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},{"url":"https://access.redhat.com/security/cve/CVE-2021-39144","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39144","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-j9h8-phrw-h4fh","tags":["article"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39145","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39145","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-8jrj-525p-826v","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39146","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39146","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-p8pq-r894-fm8f","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39147","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39147","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-h7v4-7xg3-hxcc","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39148","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39148","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-qrx8-8545-4wg2","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39149","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39149","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-3ccq-5vw3-2p6x","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39150","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39150","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-cxfm-5m4g-x7xp","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39151","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39151","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-hph2-m3g5-xxv4","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39152","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39152","tags":["advisory","report"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39153","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39153","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-2q8x-2p7f-574v","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-39154","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39154","tags":["advisory"]},{"url":"https://github.com/x-stream/xstream/security/advisories/GHSA-6w62-hx7r-mw68","tags":["article"]},{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20213476-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1189798","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39139","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39140","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39141","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39144","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39145","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39146","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39147","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39148","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39149","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39150","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39151","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39152","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39153","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-39154","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-39152","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5946-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-39139","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39140","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39141","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39144","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39145","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39146","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39147","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39148","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39149","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39150","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39151","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39153","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-39154","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-41966","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PVLPNQBYDFG66KQSVPOIZDRX3AQEQYGU/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/VPBFWNADZPOCG7HFCC7XX4AVNU7NTF4P/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-39152","title":"A Server-Side Forgery Request vulnerability in XStream via HashMap unmarshaling","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","status":"published","published":"2021-08-23T18:20:10Z","modified":"2026-10-07T20:01:09.508Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-502","CWE-918"],"updated_at":"2026-11-02T14:33:09.175141Z"}],"euvd":[{"id":"EUVD-2021-1941","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","status":"published","published":"2021-08-23T18:20:10Z","modified":"2026-10-07T20:01:09Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:33.904651Z"}],"ghsa":[{"id":"GHSA-xw4p-crpj-vjx2","title":"A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host","description":"### Impact\nThe vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.\n\n### Patches\nIf you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.\n\n### Workarounds\nSee [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs.\n\n### References\nSee full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-39152](https://x-stream.github.io/CVE-2021-39152.html).\n\n### Credits\nm0d9 of the Security Team of Alibaba Cloud found and reported the issue to XStream and provided the required information to reproduce it.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [XStream](https://github.com/x-stream/xstream/issues)\n* Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user)\n","status":"published","published":"2021-08-25T14:46:59Z","modified":"2023-01-27T05:02:46Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502","CWE-918"],"updated_at":"2026-11-02T14:36:19.144959Z"}],"nvd":[{"id":"CVE-2021-39152","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","status":"published","published":"2021-08-23T19:15:13.247Z","modified":"2026-10-07T21:17:05.177Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-502","CWE-918"],"updated_at":"2026-11-02T14:06:57.318236Z"}],"osv":[{"id":"CVE-2021-39152","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","status":"published","published":"2021-08-23T19:15:13.247Z","modified":"2026-10-20T10:53:52.721276012Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.843843Z"},{"id":"DEBIAN-CVE-2021-39152","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","status":"published","published":"2021-08-23T19:15:13.247Z","modified":"2026-10-23T18:03:50.495144363Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:35.521549Z"},{"id":"GHSA-xw4p-crpj-vjx2","title":"A Server-Side Forgery Request can be activated unmarshalling with XStream to access data streams from an arbitrary URL referencing a resource in an intranet or the local host","description":"### Impact\nThe vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.\n\n### Patches\nIf you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.\n\n### Workarounds\nSee [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs.\n\n### References\nSee full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for [CVE-2021-39152](https://x-stream.github.io/CVE-2021-39152.html).\n\n### Credits\nm0d9 of the Security Team of Alibaba Cloud found and reported the issue to XStream and provided the required information to reproduce it.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [XStream](https://github.com/x-stream/xstream/issues)\n* Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user)\n","status":"published","published":"2021-08-25T14:46:59Z","modified":"2026-09-10T03:49:15.823677029Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502","CWE-918"],"updated_at":"2026-11-02T15:47:00.604718Z"},{"id":"OESA-2021-1337","title":"xstream security update","description":"XStream is a simple library to serialize objects to XML and back again. A high level facade is supplied that simplifies common use cases. Custom objects can be serialized without need for specifying mappings. Speed and low memory footprint are a crucial part of the design, making it suitable for large object graphs or systems with high message throughput. No information is duplicated that can be obtained via reflection. This results in XML that is easier to read for humans and more compact than native Java serialization. XStream serializes internal fields, including private and final. Supports non-public and inner classes. Classes are not required to have default constructor. Duplicate references encountered in the object-model will be maintained. Supports circular references. By implementing an interface, XStream can serialize directly to/from any tree structure (not just XML). Strategies can be registered allowing customization of how particular types are represented as XML. When an exception occurs due to malformed XML, detailed diagnostics are provided to help isolate and fix the problem.\r\n\r\nSecurity Fix(es):\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39139)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39141)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39146)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39144)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39145)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream, if using the version out of the box with Java runtime version 14 to 8 or with JavaFX installed. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39153)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39148)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. If you rely on XStream\u0026apos;s default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.(CVE-2021-39150)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. If you rely on XStream\u0026apos;s default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.(CVE-2021-39152)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39147)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39140)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39154)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39149)\r\n\r\nXStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream\u0026apos;s security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.(CVE-2021-39151)","status":"published","published":"2021-09-08T11:04:36Z","modified":"2026-08-18T01:15:55.667731389Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"RHSA-2021:3956","title":"Red Hat Security Advisory: xstream security update","status":"published","published":"2024-09-20T15:04:48Z","modified":"2026-08-09T10:02:47Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"UBUNTU-CVE-2021-39152","description":"XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream with a Java runtime version 14 to 8. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. If you rely on XStream's default blacklist of the [Security Framework](https://x-stream.github.io/security.html#framework), you will have to use at least version 1.4.18.","status":"published","published":"2021-08-23T19:15:00Z","modified":"2026-02-04T04:15:36.890463Z","cvss":[{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":8.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:28.526929Z"},{"id":"CLSA-2026-1783645396","title":"TuxCare security update for com.thoughtworks.xstream:xstream (15 CVEs)","description":"TuxCare rebuilt com.thoughtworks.xstream:xstream to address 15 CVEs. Fixed in 1.4.17-tuxcare.1.","status":"published","published":"2026-08-04T14:52:43Z","modified":"2026-11-02T19:45:39.189376927Z","updated_at":"2026-11-02T20:30:13.950198Z"},{"id":"DLA-2769-1","title":"libxstream-java - security update","status":"published","published":"2021-09-29T00:00:00Z","modified":"2026-03-09T01:18:13.465642Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DSA-5004-1","title":"libxstream-java - security update","status":"published","published":"2021-11-10T00:00:00Z","modified":"2026-03-09T02:09:24.309096Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"MGASA-2021-0474","title":"Updated xstream/xmlpull/mxparser packages fix security vulnerability","description":"Multiple security vulnerabilities have been discovered in XStream. See\nreferences for details.\n","status":"published","published":"2021-10-13T19:39:52Z","modified":"2026-04-16T04:42:13.508714736Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2021:1401-1","title":"Security update for xstream","description":"This update for xstream fixes the following issues:\n\n- Upgrade to 1.4.18\n- CVE-2021-39139: Fixed an issue that allowed an attacker to execute arbitrary code execution by manipulating the processed input stream with type information. (bsc#1189798)\n- CVE-2021-39140: Fixed an issue that allowed an attacker to execute a DoS attack by manipulating the processed input stream. (bsc#1189798)\n- CVE-2021-39141: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39144: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39145: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39146: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39147: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39148: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39149: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39150: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)\n- CVE-2021-39151: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39152: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)\n- CVE-2021-39153: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39154: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n\nThis update was imported from the SUSE:SLE-15-SP2:Update update project.","status":"published","published":"2021-10-31T14:52:41Z","modified":"2026-02-04T04:31:09.149137Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2021:3476-1","title":"Security update for xstream","description":"This update for xstream fixes the following issues:\n\n- Upgrade to 1.4.18\n- CVE-2021-39139: Fixed an issue that allowed an attacker to execute arbitrary code execution by manipulating the processed input stream with type information. (bsc#1189798)\n- CVE-2021-39140: Fixed an issue that allowed an attacker to execute a DoS attack by manipulating the processed input stream. (bsc#1189798)\n- CVE-2021-39141: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39144: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39145: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39146: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39147: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39148: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39149: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39150: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)\n- CVE-2021-39151: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39152: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)\n- CVE-2021-39153: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39154: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n","status":"published","published":"2021-10-20T06:42:26Z","modified":"2026-02-04T03:55:21.687345Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"SUSE-SU-2021:3476-1","title":"Security update for xstream","description":"This update for xstream fixes the following issues:\n\n- Upgrade to 1.4.18\n- CVE-2021-39139: Fixed an issue that allowed an attacker to execute arbitrary code execution by manipulating the processed input stream with type information. (bsc#1189798)\n- CVE-2021-39140: Fixed an issue that allowed an attacker to execute a DoS attack by manipulating the processed input stream. (bsc#1189798)\n- CVE-2021-39141: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39144: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39145: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39146: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39147: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39148: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39149: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39150: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)\n- CVE-2021-39151: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39152: Fixed an issue that allowed an attacker to access protected resources hosted within the intranet or in the host itself. (bsc#1189798)\n- CVE-2021-39153: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n- CVE-2021-39154: Fixed an issue that allowed an attacker to achieve arbitrary code execution. (bsc#1189798)\n","status":"published","published":"2021-10-20T06:42:25Z","modified":"2026-02-04T03:01:41.043545Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"USN-5946-1","title":"libxstream-java vulnerabilities","description":"Lai Han discovered that XStream incorrectly handled certain inputs.\nIf a user or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to cause a denial\nof service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2021-39140)\n\nIt was discovered that XStream incorrectly handled certain inputs. If\na user or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to execute\narbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04\nLTS. (CVE-2021-39139, CVE-2021-39141, CVE-2021-39144, CVE-2021-39145,\nCVE-2021-39146, CVE-2021-39147, CVE-2021-39148, CVE-2021-39149,\nCVE-2021-39151, CVE-2021-39153, CVE-2021-39154)\n\nIt was discovered that XStream incorrectly handled certain inputs. If\na user or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to obtain\nsensitive information. This issue only affected Ubuntu 18.04 LTS and\nUbuntu 20.04 LTS. (CVE-2021-39150, CVE-2021-39152)\n\nLai Han discovered that XStream incorrectly handled certain inputs.\nIf a user or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to cause a denial\nof service. (CVE-2022-41966)\n","status":"published","published":"2023-03-13T10:57:59Z","modified":"2026-06-29T13:50:50.514103852Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}