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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-28808 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  EEF
CVSS-B 8.3 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-863 Incorrect Authorization EEF  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-28808
NVD Published Date:
04/07/2026
NVD Last Modified:
04/07/2026
Source:
EEF