CVE-2015-0807

medium
Published 2015-04-01 · Modified 2026-05-06
CVSS v3
CVSS v2
6.8
VIR risk
6.8

Description

The navigator.sendBeacon implementation in Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 processes HTTP 30x status codes for redirects after a preflight request has occurred, which allows remote attackers to bypass intended CORS access-control checks and conduct cross-site request forgery (CSRF) attacks via a crafted web site, a similar issue to CVE-2014-8638.

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/2015/mfsa2015-37.html

Application impact

VendorProductVersionsFixed
mozilla mozillafirefox{"endIncluding":"36.0.4"}
mozilla mozillafirefox31.0
mozilla mozillafirefox31.1.0
mozilla mozillafirefox31.1.1
mozilla mozillafirefox31.3.0
mozilla mozillafirefox31.5.1
mozilla mozillafirefox31.5.2
mozilla mozillafirefox31.5.3
mozilla mozillafirefox_esr31.1
mozilla mozillafirefox_esr31.2
mozilla mozillafirefox_esr31.3
mozilla mozillafirefox_esr31.4
mozilla mozillafirefox_esr31.5
mozilla mozillathunderbird{"endIncluding":"31.5"}

References

CWEs

CWE-352

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