CVE-2026-28808

Incorrect Authorization vulnerability in Erlang OTP (inets modules) allows unauthenticated access to CGI scripts protected by directory rules when served via script_alias. When script_alias maps a URL prefix to a directory outside DocumentRoot, mod_auth evaluates directory-based access controls against the DocumentRoot-relative path while mod_cgi executes the script at the ScriptAlias-resolved path. This path mismatch allows unauthenticated access to CGI scripts that directory rules were meant to protect. This vulnerability is associated with program files lib/inets/src/http_server/mod_alias.erl, lib/inets/src/http_server/mod_auth.erl, and lib/inets/src/http_server/mod_cgi.erl. This issue affects OTP from OTP 17.0 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to inets from 5.10 until 9.6.2, 9.3.2.4 and 9.1.0.6.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-28808.html
https://github.com/erlang/otp/commit/8fc71ac6af4fbcc54103bec2983ef22e82942688
https://github.com/erlang/otp/commit/9dfa0c51eac97866078e808dec2183cb7871ff7c
https://github.com/erlang/otp/security/advisories/GHSA-3vhp-h532-mc3f
https://osv.dev/vulnerability/EEF-CVE-2026-28808
https://www.erlang.org/doc/system/versions.html#order-of-versions

Configurations

No configuration.

History

07 Apr 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-07 13:16

Updated : 2026-04-07 13:20

NVD link : CVE-2026-28808

Mitre link : CVE-2026-28808

CVE.ORG link : CVE-2026-28808

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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