Detections
Analytics
SCA: security update for github.com/caddyserver/caddy/v2/modules/caddyhttp (GHSA-m2w3-8f23-hxxf)
medium Tenable Cloud Security Plugin ID 438523
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Caddy is an extensible server platform that uses TLS by default. From version 2.7.5 to before version
2.11.2, the vars_regexp matcher in vars.go:337 double-expands user-controlled input through the Caddy
replacer. When vars_regexp matches against a placeholder like {http.request.header.X-Input}, the header
value gets resolved once (expected), then passed through repl.ReplaceAll() again (the bug). This means an
attacker can put {env.DATABASE_URL} or {file./etc/passwd} in a request header and the server will evaluate
it, leaking environment variables, file contents, and system info. This issue has been patched in version
2.11.2. (CVE-2026-30852)
Solution
Update the github.com/caddyserver/caddy/v2/modules/caddyhttp library and its related packages to version 2.11.2 or later.See Also
Plugin Details
Severity: Medium
ID: 438523
Version: Revision 1.12
Type: Local
Family: SCA Checks
Published: 3/9/2026
Updated: 7/6/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.71
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2026-30852
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 6.9
Threat Score: 5.5
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/6/2026
Vulnerability Publication Date: 3/6/2026
Reference Information
CVE: CVE-2026-30852