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CVE-2009-2622

MEDIUM · CVSS 5.0EPSS 56.9%EU EUVD

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 allows remote attackers to cause a denial of service via malformed requests including (1) "missing or mismatched protocol identifier," (2) missing or negative status value," (3) "missing version," or (4) "missing or invalid status number," related to (a) HttpMsg.cc and (b) HttpReply.cc.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE)
CWE-20
EPSS score
56.9% (99th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-2617)
Published
July 28, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-2617 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid
  • squid-cache / squid

References

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

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