CVE-2026-117874: Use After Free
Source GCVE Database
Not known to be exploited.
Data as of 27 Oct 2026, 16:27 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
Description
Use-after-free in the Internationalization component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, and Firefox ESR 153.6.
References
- nvd.nist.gov/vuln/detail/CVE-2026-117874 (opens in a new tab)
- bugzilla.mozilla.org/show_bug.cgi?id=2073685 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-118 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-119 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-120 (opens in a new tab)