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CVE-2026-2789Use-after-free in the Graphics: ImageLib component
- 8.8HighCVSS base score
- 0.53%Exploitation in 30 daysEPSS · top 55% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Timeline
ID reserved
By mozilla
- 5 days later
· 5 days later
Published
- 48 days later
· 48 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.53% · top 55% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- unaffected 115.33 – ≤ 115.*
- unaffected 140.8 – ≤ 140.*
- unaffected 148 – ≤ *
- unaffected 140.8 – ≤ 140.*
- unaffected 148 – ≤ *
References
References6
- https://bugzilla.mozilla.org/show_bug.cgi?id=2015179 (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-13/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-14/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-15/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-16/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2026-17/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-8440 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-2789)Record last updated .