CVE-2007-6239

CVE-2007-6239 is a medium-severity vulnerability in Squid Squid Web Proxy Cache with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Description

The "cache update reply processing" functionality in Squid 2.x before 2.6.STABLE17 and Squid 3.0 allows remote attackers to cause a denial of service (crash) via unknown vectors related to HTTP headers and an Array memory leak during requests for cached objects.

Frequently asked questions

What is CVE-2007-6239?
The "cache update reply processing" functionality in Squid 2.x before 2.6.STABLE17 and Squid 3.0 allows remote attackers to cause a denial of service (crash) via unknown vectors related to HTTP headers and an Array memory leak during requests for cached objects.
How severe is CVE-2007-6239?
CVE-2007-6239 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-6239 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-6239?
CVE-2007-6239 primarily affects Squid Squid Web Proxy Cache. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-6239?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-6239 published?
CVE-2007-6239 was published on 2007-12-04 and last updated on 2026-06-16.

References

Affected products (38)

More vulnerabilities in Squid Squid Web Proxy Cache

All CVEs affecting Squid Squid Web Proxy Cache →

Other CWE-20 (Improper Input Validation) vulnerabilities

Browse all CWE-20 (Improper Input Validation) vulnerabilities →