CVE-2026-124874
Same-origin policy bypass in the Networking: HTTP component
cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-124874
PublishedSame-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.
Read the publisher's advisoryAffected versions, risk and source history
Related advisories and sources
Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2026-124874 · CVE overview and exploitation status
cve-program · CVE-2026-124874
- https://bugzilla.mozilla.org/show_bug.cgi?id=2080420
- https://www.mozilla.org/security/advisories/mfsa2026-125/
- https://www.mozilla.org/security/advisories/mfsa2026-126/
- https://www.mozilla.org/security/advisories/mfsa2026-127/
- https://www.mozilla.org/security/advisories/mfsa2026-128/
- https://www.mozilla.org/security/advisories/mfsa2026-129/
Related changes
Linked by CVE identifier- Same-origin policy bypass in the Networking: HTTP component · Affected-version evidence changed · 10 Nov 2026
- Same-origin policy bypass in the Networking: HTTP component · Newly collected advisory · 10 Nov 2026
- Same-origin policy bypass in the Networking: HTTP component · Affected-version evidence changed · 10 Nov 2026