Answer in brief
CVE-2026-28808 records a Critical severity (CVSS 9.8) vulnerability in ScriptAlias CGI targets bypass directory auth in inets httpd (mod_auth vs mod_cgi path mismatch). The current sources do not mark it as known exploited. The current feed maps Erlang/OTP (generic), Erlang/OTP (generic), Erlang/OTP (generic), Erlang/OTP (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Erlang/OTP (generic), Erlang/OTP (generic), Erlang/OTP (generic), Erlang/OTP (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:erlang:erlang\/inets:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Erlang/OTPgeneric | >=5.10 <* | * |
| Erlang/OTPgeneric | >=17.0 <* || >=07b8f441ca711f9812fad9e9115bab3c3aa92f79 <* | * |
| Erlang/OTPgeneric | >=17.0 <* | * |
| Erlang/OTPgeneric | >=07b8f441ca711f9812fad9e9115bab3c3aa92f79 <* | * |
Published upstream
Apr 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.