CVE-2026-27588
unknown
CVSS v3
—
CVSS v4 NEW
—
VIR risk
—
Description
Caddy MatchHost becomes case-sensitive in github.com/caddyserver/caddy/v2
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | forky | fixed | 2.11.2-1 |
| debian | sid | fixed | 2.11.2-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/caddyserver/caddy/v2 | <2.11.1 | 2.11.1 |
References
- https://security-tracker.debian.org/tracker/CVE-2026-27588
- https://github.com/caddyserver/caddy/security/advisories/GHSA-x76f-jf84-rqj8
- https://nvd.nist.gov/vuln/detail/CVE-2026-27588
- https://github.com/caddyserver/caddy/commit/eec32a0bb5a11651c6a7b04ce82dc50610f2b27e
- https://github.com/caddyserver/caddy
- https://github.com/caddyserver/caddy/releases/tag/v2.11.1
- https://pkg.go.dev/vuln/GO-2026-4541
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.