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9.8

Caddy may expose data to unauthorized users

published 1 month ago
Summary

The Caddy web server from cleanstart is affected by a flaw that could let attackers view or alter information that should be protected. This is important because the server handles encrypted traffic by default. Apply the latest software update or patch to fix the issue.

What to do
  • Update cleanstart caddy to version 2.11.4-r0.
Affected software
Ecosystem VendorProductAffected versions
CleanStart cleanstart caddy < 2.11.4-r0
Fix: upgrade to 2.11.4-r0
Original advisory text
Caddy is an extensible server platform that uses TLS by default
Security vulnerability affects the caddy package. Caddy is an extensible server platform that uses TLS by default.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker full control (estimated)
Severity
9.8 Critical
Timeline
Published20 Sep 2026
Updated20 Sep 2026
First seen20 Sep 2026
Sources
CLEANSTART-2026-DI50489 · OSV
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