EUVD-2026-82474Published

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() ca…

Historical advisory saved 30 Oct 2026 11:57:06 UTC. The publisher may have updated it since then. Latest advisory.

euvd · EUVD-2026-82474

Published

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() can pass attacker-controlled replacement bytes through buildQueryString for a second placeholder expansion when a rewrite URI ends with a literal question mark, allowing injected environment or request-variable placeholders to disclose data and, when the file provider is registered, allowing injected file placeholders to disclose readable files. The issue is fixed in version 2.11.4.

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datePublished: Sep 17, 2026, 9:04:58 PM

dateUpdated: Sep 18, 2026, 2:43:34 PM

Source published: Sep 17, 2026, 9:04:58 PM (timezone not stated)
Source modified: Sep 18, 2026, 2:43:34 PM (timezone not stated)
Saved here: 30 Oct 2026 11:57:06 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 3.1 · 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L