{"schema_version":"1.7.2","id":"OESA-2026-1705","modified":"2026-03-27T14:01:41Z","published":"2026-03-27T14:01:41Z","upstream":["CVE-2025-59375","CVE-2026-4684","CVE-2026-4685","CVE-2026-4686","CVE-2026-4687","CVE-2026-4688","CVE-2026-4689","CVE-2026-4690","CVE-2026-4691","CVE-2026-4692","CVE-2026-4693","CVE-2026-4694","CVE-2026-4695","CVE-2026-4696","CVE-2026-4697","CVE-2026-4698","CVE-2026-4699","CVE-2026-4700","CVE-2026-4701","CVE-2026-4702","CVE-2026-4704","CVE-2026-4705","CVE-2026-4706","CVE-2026-4707","CVE-2026-4708","CVE-2026-4709","CVE-2026-4710","CVE-2026-4711","CVE-2026-4712","CVE-2026-4713","CVE-2026-4714","CVE-2026-4715","CVE-2026-4716","CVE-2026-4717","CVE-2026-4718","CVE-2026-4719","CVE-2026-4720","CVE-2026-4721"],"summary":"firefox security update","details":"Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.\r\n\r\nSecurity Fix(es):\n\nlibexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.(CVE-2025-59375)\n\nRace condition, use-after-free in the Graphics: WebRender component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4684)\n\nIncorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4685)\n\nIncorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4686)\n\nSandbox escape due to incorrect boundary conditions in the Telemetry component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4687)\n\nSandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4688)\n\nSandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4689)\n\nSandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4690)\n\nUse-after-free in the CSS Parsing and Computation component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4691)\n\nSandbox escape in the Responsive Design Mode component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4692)\n\nIncorrect boundary conditions in the Audio/Video: Playback component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4693)\n\nIncorrect boundary conditions, integer overflow in the Graphics component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4694)\n\nIncorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4695)\n\nUse-after-free in the Layout: Text and Fonts component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4696)\n\nIncorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4697)\n\nJIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4698)\n\nIncorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4699)\n\nMitigation bypass in the Networking: HTTP component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4700)\n\nUse-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4701)\n\nJIT miscompilation in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4702)\n\nDenial-of-service in the WebRTC: Signaling component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4704)\n\nUndefined behavior in the WebRTC: Signaling component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4705)\n\nIncorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4706)\n\nIncorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4707)\n\nIncorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4708)\n\nIncorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.(CVE-2026-4709)\n\nIncorrect boundary conditions in the Audio/Video component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4710)\n\nUse-after-free in the Widget: Cocoa component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4711)\n\nInformation disclosure in the Widget: Cocoa component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4712)\n\nIncorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4713)\n\nIncorrect boundary conditions in the Audio/Video component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4714)\n\nUninitialized memory in the Graphics: Canvas2D component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4715)\n\nIncorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4716)\n\nPrivilege escalation in the Netmonitor component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4717)\n\nUndefined behavior in the WebRTC: Signaling component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4718)\n\nIncorrect boundary conditions in the Graphics: Text component. This vulnerability affects Firefox < 149 and Firefox ESR < 140.9.(CVE-2026-4719)\n\nMemory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4720)\n\nMemory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.(CVE-2026-4721)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS","name":"firefox","purl":"pkg:rpm/openEuler/firefox&distro=openEuler-24.03-LTS"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"140.9.0-1.oe2403"}]}],"ecosystem_specific":{"aarch64":["firefox-140.9.0-1.oe2403.aarch64.rpm","firefox-debuginfo-140.9.0-1.oe2403.aarch64.rpm","firefox-debugsource-140.9.0-1.oe2403.aarch64.rpm"],"src":["firefox-140.9.0-1.oe2403.src.rpm"],"x86_64":["firefox-140.9.0-1.oe2403.x86_64.rpm","firefox-debuginfo-140.9.0-1.oe2403.x86_64.rpm","firefox-debugsource-140.9.0-1.oe2403.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1705"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59375"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4684"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4685"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4686"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4687"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4688"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4689"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4690"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4691"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4692"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4693"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4694"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4695"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4696"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4697"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4698"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4699"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4700"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4701"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4702"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4704"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4705"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4706"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4707"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4708"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4709"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4710"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4711"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4712"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4713"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4714"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4715"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4716"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4717"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4718"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4719"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4720"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4721"}],"database_specific":{"severity":"Critical"}}