CVEvulnerability

CVE-2026-52846

4.2 MEDIUM Published 2026-06-23 Modified 2026-06-29 Official page ↗
Status
Analyzed
Published
2026-06-23
Last modified
2026-06-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.2 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Weaknesses
CWE-116

Description

Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, Caddy’s stripHTML template function cannot reliably remove all HTML tags from input strings. Certain malformed HTML, such as <<>img src=x onerror=alert()>, can bypass the tag-stripping logic, potentially leaving dangerous content in the output if it is later rendered as HTML. This may allow client-side XSS in cases where untrusted strings are rendered unsafely. This vulnerability is fixed in 2.11.4.

Affected configurations

• caddyserver caddy (< 2.11.4)

Related

Weakness · CWE (1)

  • CWE-116 Improper Encoding or Escaping of Output weakness

References