CVE-2026-117867EUVD-2026-111038GHSA-MPRV-383F-358F
Use-after-free in the Layout component
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
This vulnerability affects Mozilla Firefox and Firefox ESR, where a memory-handling flaw in the Layout component (which renders web page content) could allow memory corruption that may lead to crashes or arbitrary code execution. It has been addressed in updated releases of these browsers.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Use-after-free in the Layout component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Timeline
- CVE published
- First seen by cve.now
- Record last updated
Affected versions
- Mozilla Firefox
Version range not reported
- Mozilla Thunderbird
Version range not reported