CVE-2020-11653

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

Description

An issue was discovered in Varnish Cache before 6.0.6 LTS, 6.1.x and 6.2.x before 6.2.3, and 6.3.x before 6.3.2. It occurs when communication with a TLS termination proxy uses PROXY version 2. There can be an assertion failure and daemon restart, which causes a performance loss.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-11653

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2020:4756

OS impact

OSVersionStatusFixed in
rockylinux rocky8fixed
debian debianbookwormfixed6.4.0-1
debian debianbullseyefixed6.4.0-1
debian debianforkyfixed6.4.0-1
debian debiansidfixed6.4.0-1
debian debiantrixiefixed6.4.0-1

References

Verify integrity in audit chain (admin only). AS-IS.