CVE-2026-124885: Use-after-free in the Graphics · Text component
Affects mozjs52Source GCVE Database
Not known to be exploited · CVSS 8.8 High.
Data as of 13 Nov 2026, 22:48 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 8.8 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSmozjs102pkg:deb/ubuntu/mozjs102?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSmozjs115pkg:deb/ubuntu/mozjs115?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSmozjs102pkg:deb/ubuntu/mozjs102?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSmozjs78pkg:deb/ubuntu/mozjs78?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSmozjs91pkg:deb/ubuntu/mozjs91?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSthunderbirdpkg:deb/ubuntu/thunderbird?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users and administrators should update affected Mozilla products to Firefox 160, Firefox ESR 115.45 or later, Firefox ESR 153.7 or later, Thunderbird 160, or Thunderbird 153.7 or later to remediate this vulnerability. The vendor advisory confirms that a fix is available in these versions. No additional mitigation steps are indicated.
Description
CVE-2026-124885 is a use-after-free vulnerability in the Graphics: Text component affecting Mozilla products. This flaw was addressed and fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7. The vulnerability has a high severity rating with a CVSS score of 8.8, indicating it could lead to significant impact if exploited. No known exploits in the wild have been reported as of the advisory date.
References
- ubuntu.com/security/CVE-2026-124885 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-124885 (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-125/ (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-127/ (opens in a new tab)
- mozilla.org/en-US/security/advisories/mfsa2026-129/ (opens in a new tab)
- bugzilla.mozilla.org/show_bug.cgi?id=2082006 (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-125/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-126/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-127/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-128/ (opens in a new tab)
- mozilla.org/security/advisories/mfsa2026-129/ (opens in a new tab)