- 6.5MediumCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Same-origin policy bypass in the Request Handling component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Timeline
ID reserved
By mozilla
Published
- 4 months later
· 4 months 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 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
- unaffected 115.31 – ≤ 115.*
- unaffected 140.6 – ≤ 140.*
- unaffected 146 – ≤ *
- unaffected 140.6 – ≤ 140.*
- unaffected 146 – ≤ *
References
6
- https://bugzilla.mozilla.org/show_bug.cgi?id=2000218 (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-92/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-93/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-94/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-95/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-96/ (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-2025-202157 (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-2025-14331)Record last updated .