CVE-2012-0451
CRLF injection vulnerability in Mozilla Firefox 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 allows remote web servers to bypass intended Content Security Policy (CSP) restrictions and possibly conduct cross-site scripting (XSS) attacks via crafted HTTP headers.
Key facts
- CVSS score
- 4.3 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N- Weakness (CWE)
- CWE-94
- EPSS score
- 2.4% (84th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-0483)
- Published
- March 14, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-0483 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox
- mozilla / firefox esr
- mozilla / firefox esr
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
- mozilla / seamonkey
and 90 more…
References
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00014.html
- http://lists.opensuse.org/opensuse-updates/2012-03/msg00042.html
- http://rhn.redhat.com/errata/RHSA-2012-0387.html
- http://rhn.redhat.com/errata/RHSA-2012-0388.html
- http://secunia.com/advisories/48359
- http://secunia.com/advisories/48402
- http://secunia.com/advisories/48496
- http://secunia.com/advisories/48513
- http://secunia.com/advisories/48553
- http://secunia.com/advisories/48561
- http://secunia.com/advisories/48629
- http://secunia.com/advisories/49055
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:032
- http://www.mozilla.org/security/announce/2012/mfsa2012-15.html
- http://www.securityfocus.com/bid/52463
- http://www.securitytracker.com/id?1026801
- http://www.securitytracker.com/id?1026803
- http://www.securitytracker.com/id?1026804
- http://www.ubuntu.com/usn/USN-1400-1
- http://www.ubuntu.com/usn/USN-1400-2
- http://www.ubuntu.com/usn/USN-1400-3
- http://www.ubuntu.com/usn/USN-1400-4
- http://www.ubuntu.com/usn/USN-1400-5
- https://bugzilla.mozilla.org/show_bug.cgi?id=717511
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14909
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain