VIR Vulnerability Intelligence Relay

CVE-2014-8638

medium
Published 2015-01-14 · Modified 2026-05-06
CVSS v3
—
CVSS v2
6.8
VIR risk
6.8

Description

The navigator.sendBeacon implementation in Mozilla Firefox before 35.0, Firefox ESR 31.x before 31.4, Thunderbird before 31.4, and SeaMonkey before 2.32 omits the CORS Origin header, which allows remote attackers to bypass intended CORS access-control checks and conduct cross-site request forgery (CSRF) attacks via a crafted web site.

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: security@mozilla.org — http://www.mozilla.org/security/announce/2014/mfsa2015-03.html

Application impact
VendorProductVersionsFixed
mozillafirefox31.0
mozillafirefox31.1.0
mozillafirefox31.1.1
mozillafirefox31.3.0
mozillafirefox_esr31.2
mozillathunderbird{"endIncluding":"31.3.0"}
mozillafirefox{"endIncluding":"34.0.5"}
mozillaseamonkey{"endIncluding":"2.31"}

References

CWEs

CWE-352

Verify integrity in audit chain (admin only). AS-IS.