Incorrect Behavior Order: Authorization Before Parsing and Canonicalization Affecting erlang-erts package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.54% (43rd percentile)

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  • Snyk IDSNYK-RHEL10-ERLANGERTS-15968607
  • published10 Apr 2026
  • disclosed7 Apr 2026

Introduced: 7 Apr 2026

CVE-2026-28808  (opens in a new tab)
CWE-551  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 erlang-erts.

NVD Description

Note: Versions mentioned in the description apply only to the upstream erlang-erts package and not the erlang-erts package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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 before OTP 26.2.5.19, OTP 27.3.4.10, and OTP 28.4.2, corresponding to inets from 5.10 before 9.1.0.6, 9.3.2.4, and 9.6.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.

CVSS Base Scores

version 3.1