CVE-2026-117866EUVD-2026-111037GHSA-QJJG-JWPJ-6849
Privilege escalation due to use-after-free in the Graphics: Canvas2D 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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, specifically its Canvas2D graphics component, and could allow an attacker to gain elevated privileges through a memory-handling flaw (use-after-free). Successful exploitation could let malicious content run with higher system access than intended.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Privilege escalation due to use-after-free in the Graphics: Canvas2D 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