{"id":"CVE-2026-57962","aliases":["CLSA-2026-1785839724","DEBIAN-CVE-2026-57962","EUVD-2026-40861","GHSA-qg45-rc8c-9676","MGASA-2026-0243","MGASA-2026-0326","OESA-2026-2936","OESA-2026-3093","UBUNTU-CVE-2026-57962","openSUSE-SU-2026:11164-1"],"status":"published","title":"Denial-of-service via malicious LDAP address-book server","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.0034,"percentile":0.27678,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2026-07-01T00:00:00Z","modified":"2026-10-26T11:47:25Z","fixes":[{"ecosystem":"Debian:12","package":"thunderbird","fixed_in":["1:140.13.0esr-2~deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"thunderbird","fixed_in":["1:140.13.0esr-2~deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"thunderbird","fixed_in":["1:140.13.0esr-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"TuxCare:AlmaLinux:9.2","package":"thunderbird","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"140.13.0-1.el9_2.alma.1.tuxcare.els1"}]}],"bundled":35},{"source":"osv","ecosystem":"Debian:12","package":"thunderbird","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:140.13.0esr-2~deb12u1"}]}],"versions":["1:102.11.0-1","1:102.12.0-1","1:102.12.0-1~deb10u1","1:102.12.0-1~deb11u1","1:102.12.0-1~deb12u1","1:102.13.0-1","1:102.13.0-1~deb10u1","1:102.13.0-1~deb11u1","1:102.13.0-1~deb12u1","1:102.13.1-1","1:102.13.1-1~deb10u1","1:102.13.1-1~deb11u1","1:102.13.1-1~deb12u1","1:102.14.0-1~deb10u1","1:102.14.0-1~deb11u1","1:102.14.0-1~deb12u1","1:102.15.0-1~deb10u1","1:102.15.0-1~deb11u1","1:102.15.0-1~deb12u1","1:102.15.1-1~deb10u1","1:102.15.1-1~deb11u1","1:102.15.1-1~deb12u1","1:103.0~b5-1","1:104.0~b2-1","1:110.0~b4-1","1:112.0~b1-1","1:113.0~b3-1","1:114.0~b2-1","1:115.0-1","1:115.0.1-1","1:115.0.1-2","1:115.0~b4-1","1:115.0~b6-1","1:115.1.0-1","1:115.1.1-1","1:115.10.1-1","1:115.10.1-1~deb10u1","1:115.10.1-1~deb11u1","1:115.10.1-1~deb12u1","1:115.11.0-1","1:115.11.0-1~deb10u1","1:115.11.0-1~deb11u1","1:115.11.0-1~deb12u1","1:115.12.0-1","1:115.12.0-1~deb10u1","1:115.12.0-1~deb11u1","1:115.12.0-1~deb12u1","1:115.13.0-1","1:115.13.0-1~deb11u1","1:115.13.0-1~deb12u1","1:115.14.0-1~deb11u1","1:115.14.0-1~deb12u1","1:115.15.0-1~deb11u1","1:115.15.0-1~deb12u1","1:115.16.0esr-1~deb11u1","1:115.16.0esr-1~deb12u1","1:115.2.0-1","1:115.2.2-1","1:115.3.0-1","1:115.3.0-1~deb12u1","1:115.3.1-1","1:115.3.1-1~deb10u1","1:115.3.1-1~deb11u1","1:115.3.1-1~deb12u1","1:115.4.1-1","1:115.4.1-1~deb10u1","1:115.4.1-1~deb11u1","1:115.4.1-1~deb12u1","1:115.5.0-1","1:115.5.0-1~deb10u1","1:115.5.0-1~deb11u1","1:115.5.0-1~deb12u1","1:115.5.1-1","1:115.5.2-1","1:115.6.0-1","1:115.6.0-1~deb10u1","1:115.6.0-1~deb11u1","1:115.6.0-1~deb12u1","1:115.7.0-1","1:115.7.0-1~deb10u1","1:115.7.0-1~deb11u1","1:115.7.0-1~deb12u1","1:115.8.0-1","1:115.8.0-1~deb10u1","1:115.8.0-1~deb11u1","1:115.8.0-1~deb12u1","1:115.8.1-1","1:115.9.0-1","1:115.9.0-1~deb10u1","1:115.9.0-1~deb11u1","1:115.9.0-1~deb12u1","1:116.0~b7-1","1:117.0~b5-1","1:120.0~b1-1","1:121.0~b3-1","1:122.0~b2-1","1:124.0~b5-1","1:125.0~b3-1","1:127.0~b5-1","1:128.0esr-1","1:128.0~b5-1","1:128.1.0esr-1","1:128.1.1esr-1","1:128.10.0esr-1","1:128.10.0esr-1~deb11u1","1:128.10.0esr-1~deb12u1","1:128.10.1esr-1","1:128.10.1esr-1~deb11u1","1:128.10.1esr-1~deb12u1","1:128.11.0esr-1","1:128.11.0esr-1~deb11u1","1:128.11.0esr-1~deb12u1","1:128.12.0esr-1","1:128.12.0esr-1~deb11u1","1:128.12.0esr-1~deb12u1","1:128.13.0esr-1","1:128.13.0esr-1~deb11u1","1:128.13.0esr-1~deb12u1","1:128.14.0esr-1","1:128.14.0esr-1~deb11u1","1:128.14.0esr-1~deb12u1","1:128.14.0esr-1~deb13u1","1:128.2.0esr-1","1:128.2.1esr-1","1:128.2.3esr-1","1:128.3.0esr-1","1:128.3.2esr-1","1:128.4.0esr-1","1:128.4.0esr-1~deb11u1","1:128.4.0esr-1~deb12u1","1:128.4.2esr-1","1:128.4.3esr-1","1:128.4.3esr-1~deb11u1","1:128.4.3esr-1~deb12u1","1:128.5.0esr-1","1:128.5.0esr-1~deb11u1","1:128.5.0esr-1~deb12u1","1:128.5.2esr-1","1:128.6.0esr-1","1:128.6.0esr-1~deb11u1","1:128.6.0esr-1~deb12u1","1:128.7.0esr-1","1:128.7.0esr-1~deb11u1","1:128.7.0esr-1~deb12u1","1:128.8.0esr-1","1:128.8.0esr-1~deb11u1","1:128.8.0esr-1~deb12u1","1:128.9.0esr-1","1:128.9.0esr-1~deb11u1","1:128.9.0esr-1~deb12u1","1:129.0~b6-1","1:130.0~b3-1","1:132.0~b6-1","1:135.0-1","1:136.0-1","1:137.0-1","1:138.0-1","1:140.0.1esr-1","1:140.1.0esr-1","1:140.1.1esr-1","1:140.10.0esr-1","1:140.10.0esr-1~deb11u1","1:140.10.0esr-1~deb12u1","1:140.10.0esr-1~deb13u1","1:140.10.1esr-1","1:140.10.1esr-1~deb11u1","1:140.10.1esr-1~deb12u1","1:140.10.1esr-1~deb13u1","1:140.10.2esr-1","1:140.10.2esr-1~deb11u1","1:140.10.2esr-1~deb12u1","1:140.10.2esr-1~deb13u1","1:140.11.0esr-1","1:140.11.0esr-1~deb11u1","1:140.11.0esr-1~deb12u1","1:140.11.0esr-1~deb13u1","1:140.12.0esr-1","1:140.12.0esr-1~deb11u1","1:140.12.0esr-1~deb12u1","1:140.12.0esr-1~deb13u1","1:140.13.0esr-1","1:140.13.0esr-2~deb11u1","1:140.2.0esr-1","1:140.3.0esr-1","1:140.3.0esr-1~deb11u1","1:140.3.0esr-1~deb12u1","1:140.3.0esr-1~deb13u1","1:140.3.1esr-1","1:140.4.0esr-1","1:140.4.0esr-1~deb11u1","1:140.4.0esr-1~deb12u1","1:1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Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57962","tags":["advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-62"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-63"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-64"},{"url":"https://github.com/advisories/GHSA-qg45-rc8c-9676"},{"url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1785839724.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-14899","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15718","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15719","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16349","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16350","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16351","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16352","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16353","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16354","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16355","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16356","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16357","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16358","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16359","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16360","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16361","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16362","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16363","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16368","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16369","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16371","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16374","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16375","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16377","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16379","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16381","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16383","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16387","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16390","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16391","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16396","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16405","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16412","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57963","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-57962","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0243.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35716","tags":["report"]},{"url":"https://www.thunderbird.net/en-US/thunderbird/140.12.0esr/releasenotes/","tags":["web"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-61/","tags":["advisory"]},{"url":"https://www.thunderbird.net/en-US/thunderbird/140.12.1esr/releasenotes/","tags":["web"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-64/","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2026-0326.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35982","tags":["report"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35863","tags":["report"]},{"url":"https://www.thunderbird.net/en-US/thunderbird/140.13.0esr/releasenotes/","tags":["web"]},{"url":"https://www.mozilla.org/en-US/security/known-vulnerabilities/thunderbird/#thunderbird140.13","tags":["web"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2936","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3093","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-57962","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-57962","tags":["report"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-62/","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57962","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-57963","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-57962","title":"Denial-of-service via malicious LDAP address-book server","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","status":"published","published":"2026-07-01T00:58:32.777Z","modified":"2026-07-01T14:40:26.466Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-40861","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","status":"published","published":"2026-07-01T00:58:32Z","modified":"2026-07-01T14:40:26Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T18:20:19.829772Z"}],"ghsa":[{"id":"GHSA-qg45-rc8c-9676","title":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book...","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","status":"published","published":"2026-07-01T03:35:24Z","modified":"2026-07-01T18:32:55Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:09:10.245383Z"}],"nvd":[{"id":"CVE-2026-57962","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","status":"published","published":"2026-07-01T02:17:00.597Z","modified":"2026-10-25T17:10:00.197Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:27.199837Z"}],"osv":[{"id":"DEBIAN-CVE-2026-57962","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","status":"published","published":"2026-07-01T02:17:00.597Z","modified":"2026-10-26T11:47:25.947643519Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"OESA-2026-2936","title":"thunderbird security update","description":"Mozilla Thunderbird is a standalone mail and newsgroup client.\r\n\r\nSecurity Fix(es):\n\nA malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.(CVE-2026-57962)\n\nAn attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.(CVE-2026-57963)","status":"published","published":"2026-07-09T11:11:50Z","modified":"2026-08-18T01:21:16.980275322Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3093","title":"thunderbird security update","description":"Mozilla Thunderbird is a standalone mail and newsgroup client.\r\n\r\nSecurity Fix(es):\n\nA malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.(CVE-2026-57962)\n\nAn attacker who can send HTML chat messages (via Matrix or XMPP) can inject arbitrary styled content, phishing links, and CSS that manipulates the chat UI. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.(CVE-2026-57963)","status":"published","published":"2026-07-19T11:11:58Z","modified":"2026-08-18T01:21:21.007098675Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"UBUNTU-CVE-2026-57962","description":"A malicious LDAP server, which a Thunderbird user is configured to query for address-book autocomplete, can stash arbitrarily large amounts of attacker-supplied data into the Thunderbird LDAP client until it crashes due to memory exhaustion. This vulnerability was fixed in Thunderbird 152.0.1 and Thunderbird 140.12.1.","status":"published","published":"2026-07-01T02:17:00Z","modified":"2026-10-17T13:00:28.332527321Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:56:41.911783Z"},{"id":"CLSA-2026-1785839724","title":"thunderbird: Fix of 35 CVEs","description":"- update to 140.13.0 ESR (MFSA 2026-72; includes MFSA 2026-64 / 140.12.1 fixes)\n- CVE-2026-14899: The code to parse MIME headers for display when forwarding\n  a message (if the setting to view all headers was enabled) had an\n  off-by-one error, allowing a single byte to be read from the memory after\n  the buffer for the headers, and potentially crashing Thunderbird\n- CVE-2026-15718: Invalid pointer in the JavaScript: WebAssembly component.\n  Exploit code for this issue is public\n- CVE-2026-15719: Site isolation issue in the DOM: Navigation component.\n  Exploit code for this issue is public\n- CVE-2026-16349: Same-origin policy bypass in the DOM: Navigation component\n- CVE-2026-16350: Incorrect boundary conditions in the Audio/Video: cubeb\n  component\n- CVE-2026-16351: Sandbox escape due to use-after-free in the DOM: Navigation\n  component\n- CVE-2026-16352: Sandbox escape due to use-after-free in the Disability\n  Access APIs component\n- CVE-2026-16353: Invalid pointer in the DOM: Bindings (WebIDL) component\n- CVE-2026-16354: Information disclosure in the Graphics: ImageLib component\n- CVE-2026-16355: JIT miscompilation in the JavaScript Engine: JIT component\n- CVE-2026-16356: Sandbox escape due to use-after-free in the Disability\n  Access APIs component\n- CVE-2026-16357: Incorrect boundary conditions in the Graphics component\n- CVE-2026-16358: Site isolation issue in the Graphics: WebRender component\n- CVE-2026-16359: Incorrect boundary conditions in the Audio/Video: GMP\n  component\n- CVE-2026-16360: Memory safety bugs present in Thunderbird ESR 140.12 and\n  Thunderbird 152. Some of these bugs showed evidence of memory corruption\n  and we presume that with enough effort some of these could have been\n  exploited to run arbitrary code\n- CVE-2026-16361: Memory safety bugs present in Thunderbird ESR 140.12. Some\n  of these bugs showed evidence of memory corruption and we presume that with\n  enough effort some of these could have been exploited to run arbitrary code\n- CVE-2026-16362: Use-after-free in the WebRTC: Audio/Video component\n- CVE-2026-16363: JIT miscompilation in the JavaScript: WebAssembly component\n- CVE-2026-16368: Incorrect boundary conditions in the JavaScript:\n  WebAssembly component\n- CVE-2026-16369: Integer overflow in the JavaScript: WebAssembly component\n- CVE-2026-16371: Privilege escalation in the DOM: Navigation component\n- CVE-2026-16374: Information disclosure in the Framework component in\n  DevTools\n- CVE-2026-16375: Site isolation issue in the Networking: HTTP component\n- CVE-2026-16377: Mitigation bypass in the PDF Viewer component\n- CVE-2026-16379: Privilege escalation in the DOM: Content Processes\n  component\n- CVE-2026-16381: Same-origin policy bypass in the Networking: DNS component\n- CVE-2026-16383: Mitigation bypass in the DOM: Networking component\n- CVE-2026-16387: Site isolation issue in the Networking component\n- CVE-2026-16390: Mitigation bypass in the Enterprise Policies component\n- CVE-2026-16391: Information disclosure in the Storage: IndexedDB component\n- CVE-2026-16396: Privilege escalation in WebExtensions\n- CVE-2026-16405: Information disclosure in the Networking: WebSockets\n  component\n- CVE-2026-16412: Memory safety bugs present in Thunderbird ESR 140.12 and\n  Thunderbird 152. Some of these bugs showed evidence of memory corruption\n  and we presume that with enough effort some of these could have been\n  exploited to run arbitrary code\n- CVE-2026-57962: Memory exhaustion via a malicious LDAP address-book server\n- CVE-2026-57963: Content injection via HTML chat messages (Matrix/XMPP)","status":"published","published":"2026-08-04T10:36:04Z","modified":"2026-10-26T09:30:31.215417939Z","updated_at":"2026-11-02T15:43:46.850893Z"},{"id":"MGASA-2026-0243","title":"Updated thunderbird thunderbird-l10n packages fix security vulnerabilities","description":"The updated packages fix security vulnerabilities:\nPrivilege escalation in the Graphics: WebRender component.\n(CVE-2026-12289)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12290)\nUse-after-free in the Networking: HTTP component. (CVE-2026-12291)\nIncorrect boundary conditions in the Web Audio component.\n(CVE-2026-12292)\nSandbox escape in the DOM: Workers component. (CVE-2026-12294)\nSandbox escape in the DOM: Navigation component. (CVE-2026-12295)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12298)\nSandbox escape in the Security: Process Sandboxing component.\n(CVE-2026-12296)\nSandbox escape due to incorrect boundary conditions in the Networking\ncomponent. (CVE-2026-12297)\nJIT miscompilation in the DOM: Core \u0026 HTML component. (CVE-2026-12299)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12329)\nMitigation bypass in the DOM: Security component. (CVE-2026-12302)\nSame-origin policy bypass in the Networking: Cookies component.\n(CVE-2026-12304)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12305)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12306)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12307)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12308)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12309)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12310)\nInformation disclosure, sandbox escape in the Security: Process\nSandboxing component. (CVE-2026-12311)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12312)\nInformation disclosure, sandbox escape in the Security: Process\nSandboxing component. (CVE-2026-12313)\nMemory safety bug fixed in Thunderbird ESR 140.12. (CVE-2026-12314)\nMitigation bypass in the DOM: Security component. (CVE-2026-12315)\nIncorrect boundary conditions in the Internationalization component.\n(CVE-2026-12330)\nIncorrect boundary conditions in the Graphics: CanvasWebGL component.\n(CVE-2026-12324)\nDenial-of-service in the Graphics: ImageLib component. (CVE-2026-12325)\nMemory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12,\nFirefox 152 and Thunderbird 152. (CVE-2026-12327)\nMemory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12,\nThunderbird ESR 140.12, Firefox 152 and Thunderbird 152.\n(CVE-2026-12328)\nDenial-of-service via malicious LDAP address-book server.\n(CVE-2026-57962)\nChat UI manipulation by injection. (CVE-2026-57963)\n","status":"published","published":"2026-07-13T21:24:46Z","modified":"2026-07-13T21:35:16.586867602Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"MGASA-2026-0326","title":"Updated thunderbird packages fix security vulnerabilities","description":"Updated thunderbird packages fix various security issues. See the\nlinks to get complete information of each issue.\n","status":"published","published":"2026-08-07T06:29:31Z","modified":"2026-08-07T06:43:39.988048418Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"openSUSE-SU-2026:11164-1","title":"MozillaThunderbird-140.12.1-1.1 on GA media","description":"These are all security issues fixed in the MozillaThunderbird-140.12.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-07-01T00:00:00Z","modified":"2026-07-02T18:24:17.251435936Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}