{"id":"CVE-2024-3572","aliases":["DEBIAN-CVE-2024-3572","EUVD-2024-0557","GHSA-7j7m-v7m3-jqm7","PYSEC-2026-1907","UBUNTU-CVE-2024-3572","USN-7476-1"],"status":"published","title":"XML External Entity (XXE) Vulnerability in scrapy/scrapy","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00814,"percentile":0.57302,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-409"],"published":"2024-02-16T16:07:13Z","modified":"2026-11-02T12:02:39Z","fixes":[{"ecosystem":"PyPI","package":"scrapy","fixed_in":["2.11.1","1.8.4"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:13","package":"python-scrapy","fixed_in":["2.11.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"python-scrapy","fixed_in":["2.11.1-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"python-scrapy","fixed_in":["1.5.0-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"python-scrapy","fixed_in":["1.7.3-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"python-scrapy","fixed_in":["2.5.1-2ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.11.1"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.4"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0-1","2.11.0-1","2.11.0-2","2.11.1-1","2.11.1-2","2.11.2-1","2.11.2-2","2.11.2-3","2.12.0-1","2.12.0-2","2.13.1-1~exp1","2.13.3-1","2.13.3-1~exp1","2.13.4-1","2.13.4-2","2.14.0-1","2.14.1-1","2.14.2-1","2.15.1-1","2.16.0-1","2.16.0-2","2.17.0-1","2.18.0-1","2.18.0-2","2.19.0-1","2.19.0-2","2.8.0-2","2.9.0-1","2.9.0-1~exp1","2.9.0-2"]},{"source":"osv","ecosystem":"Debian:13","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.11.1"}]}],"versions":["2.0.0","2.0.1","2.1.0","2.10.0","2.10.1","2.11.0","2.2.0","2.2.1","2.3.0","2.4.0","2.4.1","2.5.0","2.5.1","2.6.0","2.6.1","2.6.2","2.6.3","2.7.0","2.7.1","2.8.0","2.9.0"]},{"source":"osv","ecosystem":"PyPI","package":"scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.4"}]}],"versions":["0.10.4.2364","0.12.0.2550","0.14.1","0.14.2","0.14.3","0.14.4","0.16.0","0.16.1","0.16.2","0.16.3","0.16.4","0.16.5","0.18.0","0.18.1","0.18.2","0.18.3","0.18.4","0.20.0","0.20.1","0.20.2","0.22.0","0.22.1","0.22.2","0.24.0","0.24.1","0.24.2","0.24.3","0.24.4","0.24.5","0.24.6","0.7","0.8","0.9","1.0.0","1.0.0rc1","1.0.0rc2","1.0.0rc3","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.1.0","1.1.0rc1","1.1.0rc2","1.1.0rc3","1.1.0rc4","1.1.1","1.1.2","1.1.3","1.1.4","1.2.0","1.2.1","1.2.2","1.2.3","1.3.0","1.3.1","1.3.2","1.3.3","1.4.0","1.5.0","1.5.1","1.5.2","1.6.0","1.7.0","1.7.1","1.7.2","1.7.3","1.7.4","1.8.0","1.8.1","1.8.2","1.8.3"]},{"source":"osv","ecosystem":"PyPI","package":"scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.4"},{"introduced":"2.0.0"},{"fixed":"2.11.1"}]}],"versions":["0.10.4.2364","0.12.0.2550","0.14.1","0.14.2","0.14.3","0.14.4","0.16.0","0.16.1","0.16.2","0.16.3","0.16.4","0.16.5","0.18.0","0.18.1","0.18.2","0.18.3","0.18.4","0.20.0","0.20.1","0.20.2","0.22.0","0.22.1","0.22.2","0.24.0","0.24.1","0.24.2","0.24.3","0.24.4","0.24.5","0.24.6","0.7","0.8","0.9","1.0.0","1.0.0rc1","1.0.0rc2","1.0.0rc3","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.1.0","1.1.0rc1","1.1.0rc2","1.1.0rc3","1.1.0rc4","1.1.1","1.1.2","1.1.3","1.1.4","1.2.0","1.2.1","1.2.2","1.2.3","1.3.0","1.3.1","1.3.2","1.3.3","1.4.0","1.5.0","1.5.1","1.5.2","1.6.0","1.7.0","1.7.1","1.7.2","1.7.3","1.7.4","1.8.0","1.8.1","1.8.2","1.8.3","2.0.0","2.0.1","2.1.0","2.10.0","2.10.1","2.11.0","2.2.0","2.2.1","2.3.0","2.4.0","2.4.1","2.5.0","2.5.1","2.6.0","2.6.1","2.6.2","2.6.3","2.7.0","2.7.1","2.8.0","2.9.0"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-1","1.0.3-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0-1ubuntu0.1~esm1"}]}],"versions":["1.3.0-1~exp2","1.4.0-1","1.5.0-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.3-1ubuntu0.1~esm1"}]}],"versions":["1.7.3-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-2ubuntu0.1~esm1"}]}],"versions":["2.4.1-2","2.5.1-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0-1ubuntu0.1~esm1"}]}],"versions":["1.3.0-1~exp2","1.4.0-1","1.5.0-1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.3-1ubuntu0.1~esm1"}]}],"versions":["1.7.3-1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-2ubuntu0.1~esm1"}]}],"versions":["2.4.1-2","2.5.1-2"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"python-scrapy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.11.1-1ubuntu0.1~esm2"}]}],"versions":["2.10.0-1","2.11.0-1","2.11.0-2","2.11.1-1"],"bundled":6}],"products":[{"vendor":"scrapy","product":"scrapy"},{"vendor":"scrapy","product":"scrapy/scrapy"}],"references":[{"url":"https://huntr.com/bounties/c4a0fac9-0c5a-4718-9ee4-2d06d58adabb","tags":["x_transferred","Exploit","Issue Tracking","Third Party Advisory","web","report"]},{"url":"https://github.com/scrapy/scrapy/commit/809bfac4890f75fc73607318a04d2ccba71b3d9f","tags":["x_transferred","Patch","fix","web","report"]},{"url":"https://github.com/scrapy/scrapy/security/advisories/GHSA-7j7m-v7m3-jqm7","tags":["web","report"]},{"url":"https://github.com/scrapy/scrapy/commit/71b8741e3607cfda2833c7624d4ada87071aa8e5","tags":["web"]},{"url":"https://docs.scrapy.org/en/latest/news.html#scrapy-2-11-1-2024-02-14","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-3572","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-7j7m-v7m3-jqm7","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/3xxx/CVE-2024-3572.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2024-3572","tags":["advisory"]},{"url":"https://github.com/scrapy/scrapy","tags":["package"]},{"url":"https://pypi.org/project/scrapy","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2024-3572","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-3572","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7476-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-41125","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-0577","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-1892","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-1968","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-3574","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2024-3572","title":"XML External Entity (XXE) Vulnerability in scrapy/scrapy","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data. ","status":"published","published":"2024-04-16T00:00:14.499Z","modified":"2024-08-01T20:12:07.961Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:34:10.961618Z"}],"euvd":[{"id":"EUVD-2024-0557","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data. ","status":"published","published":"2024-04-16T00:00:14Z","modified":"2024-08-01T20:12:07Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:39.0087Z"}],"ghsa":[{"id":"GHSA-7j7m-v7m3-jqm7","title":"Scrapy decompression bomb vulnerability","description":"### Impact\n\nScrapy limits allowed response sizes by default through the [`DOWNLOAD_MAXSIZE`](https://docs.scrapy.org/en/latest/topics/settings.html#download-maxsize) and [`DOWNLOAD_WARNSIZE`](https://docs.scrapy.org/en/latest/topics/settings.html#download-warnsize) settings.\n\nHowever, those limits were only being enforced during the download of the raw, usually-compressed response bodies, and not during decompression, making Scrapy vulnerable to [decompression bombs](https://cwe.mitre.org/data/definitions/409.html).\n\nA malicious website being scraped could send a small response that, on decompression, could exhaust the memory available to the Scrapy process, potentially affecting any other process sharing that memory, and affecting disk usage in case of uncompressed response caching.\n\n### Patches\n\nUpgrade to Scrapy 2.11.1.\n\nIf you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.11.1 is not an option, you may upgrade to Scrapy 1.8.4 instead.\n\n### Workarounds\n\nThere is no easy workaround.\n\nDisabling HTTP decompression altogether is impractical, as HTTP compression is a rather common practice.\n\nHowever, it is technically possible to manually backport the 2.11.1 or 1.8.4 fix, replacing the corresponding components of an unpatched version of Scrapy with patched versions copied into your own code.\n\n### Acknowledgements\n\nThis security issue was reported by @dmandefy  [through huntr.com](https://huntr.com/bounties/c4a0fac9-0c5a-4718-9ee4-2d06d58adabb/).","status":"published","published":"2024-02-16T16:07:13Z","modified":"2026-03-22T05:04:12Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:39:40.633038Z"}],"nvd":[{"id":"CVE-2024-3572","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data. ","status":"published","published":"2024-04-16T00:15:12.387Z","modified":"2026-06-17T07:44:32.49Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:09:50.299382Z"}],"osv":[{"id":"CVE-2024-3572","title":"XML External Entity (XXE) Vulnerability in scrapy/scrapy","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data. ","status":"published","published":"2024-04-16T00:00:14.499Z","modified":"2026-10-28T02:30:28.967087548Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T15:44:40.704083Z"},{"id":"DEBIAN-CVE-2024-3572","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data.","status":"published","published":"2024-04-16T00:15:12.387Z","modified":"2026-11-02T12:02:39.878950661Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:42.530184Z"},{"id":"GHSA-7j7m-v7m3-jqm7","title":"Scrapy decompression bomb vulnerability","description":"### Impact\n\nScrapy limits allowed response sizes by default through the [`DOWNLOAD_MAXSIZE`](https://docs.scrapy.org/en/latest/topics/settings.html#download-maxsize) and [`DOWNLOAD_WARNSIZE`](https://docs.scrapy.org/en/latest/topics/settings.html#download-warnsize) settings.\n\nHowever, those limits were only being enforced during the download of the raw, usually-compressed response bodies, and not during decompression, making Scrapy vulnerable to [decompression bombs](https://cwe.mitre.org/data/definitions/409.html).\n\nA malicious website being scraped could send a small response that, on decompression, could exhaust the memory available to the Scrapy process, potentially affecting any other process sharing that memory, and affecting disk usage in case of uncompressed response caching.\n\n### Patches\n\nUpgrade to Scrapy 2.11.1.\n\nIf you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.11.1 is not an option, you may upgrade to Scrapy 1.8.4 instead.\n\n### Workarounds\n\nThere is no easy workaround.\n\nDisabling HTTP decompression altogether is impractical, as HTTP compression is a rather common practice.\n\nHowever, it is technically possible to manually backport the 2.11.1 or 1.8.4 fix, replacing the corresponding components of an unpatched version of Scrapy with patched versions copied into your own code.\n\n### Acknowledgements\n\nThis security issue was reported by @dmandefy  [through huntr.com](https://huntr.com/bounties/c4a0fac9-0c5a-4718-9ee4-2d06d58adabb/).","status":"published","published":"2024-02-16T16:07:13Z","modified":"2026-07-07T17:57:02.337875458Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T15:46:41.002603Z"},{"id":"PYSEC-2026-1907","title":"Scrapy decompression bomb vulnerability","description":"### Impact\n\nScrapy limits allowed response sizes by default through the [`DOWNLOAD_MAXSIZE`](https://docs.scrapy.org/en/latest/topics/settings.html#download-maxsize) and [`DOWNLOAD_WARNSIZE`](https://docs.scrapy.org/en/latest/topics/settings.html#download-warnsize) settings.\n\nHowever, those limits were only being enforced during the download of the raw, usually-compressed response bodies, and not during decompression, making Scrapy vulnerable to [decompression bombs](https://cwe.mitre.org/data/definitions/409.html).\n\nA malicious website being scraped could send a small response that, on decompression, could exhaust the memory available to the Scrapy process, potentially affecting any other process sharing that memory, and affecting disk usage in case of uncompressed response caching.\n\n### Patches\n\nUpgrade to Scrapy 2.11.1.\n\nIf you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.11.1 is not an option, you may upgrade to Scrapy 1.8.4 instead.\n\n### Workarounds\n\nThere is no easy workaround.\n\nDisabling HTTP decompression altogether is impractical, as HTTP compression is a rather common practice.\n\nHowever, it is technically possible to manually backport the 2.11.1 or 1.8.4 fix, replacing the corresponding components of an unpatched version of Scrapy with patched versions copied into your own code.\n\n### Acknowledgements\n\nThis security issue was reported by @dmandefy  [through huntr.com](https://huntr.com/bounties/c4a0fac9-0c5a-4718-9ee4-2d06d58adabb/).","status":"published","published":"2026-07-07T11:45:32.655272Z","modified":"2026-07-07T17:47:52.942329189Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:55.537808Z"},{"id":"UBUNTU-CVE-2024-3572","description":"The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access local files, generate network connections, or circumvent firewalls by submitting specially crafted XML data.","status":"published","published":"2024-04-16T00:15:00Z","modified":"2026-02-04T20:31:02.85612Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:50.784131Z"},{"id":"USN-7476-1","title":"python-scrapy vulnerabilities","description":"It was discovered that Scrapy improperly exposed HTTP authentication \ncredentials to request targets, including during redirects. An attacker \ncould use this issue to gain unauthorized access to user accounts. This\nissue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-41125)\n\nIt was discovered that Scrapy did not remove the cookie header during\ncross-domain redirects. An attacker could possibly use this issue to gain\nunauthorized access to user accounts. This issue only affected Ubuntu 18.04\nLTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-0577)\n\nIt was discovered that Scrapy inefficiently parsed XML content. An\nattacker could use this issue to cause a denial of service by sending a\ncrafted XML response. This issue only affected Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-1892)\n\nIt was discovered that Scrapy did not properly check response size during\ndecompression. An attacker could send a crafted response that would\nexhaust memory and cause a denial of service. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-3572)\n\nIt was discovered that Scrapy did not remove the authorization header\nduring cross-domain redirects. An attacker could possibly use this issue\nto gain unauthorized access to user accounts. This issue only affected \nUbuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2024-3574)\n\nIt was discovered that Scrapy did not remove the authorization header\nduring redirects that change scheme but remain in the same domain. This\nissue could possibly be used by an attacker to expose sensitive \ninformation or to gain unauthorized access to user accounts.\n(CVE-2024-1968)\n\n","status":"published","published":"2025-05-05T16:31:52Z","modified":"2026-04-27T18:02:20.75951352Z","updated_at":"2026-11-02T16:58:19.988474Z"}]}}