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CVE-2011-2990

MEDIUM · CVSS 5.0EPSS 1.0%EU EUVD

The implementation of Content Security Policy (CSP) violation reports in Mozilla Firefox 4.x through 5, SeaMonkey 2.x before 2.3, and possibly other products does not remove proxy-authorization credentials from the listed request headers, which allows attackers to obtain sensitive information by reading a report, related to incorrect host resolution that occurs with certain redirects.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness (CWE)
CWE-255
EPSS score
1.0% (62th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-2958)
Published
August 18, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-2958 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected 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 / 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
  • 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 24 more…

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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