5

CVE-2009-2622: squid-cache squid Improper Input Validation

CVSS: 5.0v2.0MediumModified
Published 28-07-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-2622 is a medium (CVSS 5.0) Improper Input Validation vulnerability in squid-cache squid. EPSS estimates a 56.91% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
56.91%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2
DSA-1843-1DSA-1843-2

Timeline

  1. 28-07-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

56.91%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 56.91% on 19-09-2026

19-09-202619-10-2026
EPSS score
56.91%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Squid-cache1 product
  • squidEOL3.0 | 3.0:rc1 | 3.0:rc4 | 3.1 | 3.1.0.1 | 3.1.0.2 | 3.1.0.3 | 3.1.0.4

1 vendor · 1 product

References

8 links