Vulnerability in Squid-Cache Squid

CVE-2021-46784

In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.

EPSS: 0.045 (90.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-46784?
CVE-2021-46784 is a medium-severity vulnerability in Squid-Cache Squid, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2022-07-17.
How severe is CVE-2021-46784?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2021-46784 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.