CVE-2026-23941: Erlang OTP

Request smuggling via first-wins Content-Length parsing in inets httpd

CVSS 7.0 HighEPSS 0.0048 · 41st percentile

Published by the CVE Program (CNA: EEF) at 13 Mar 2026, 09:11 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Erlang	OTP Package name: inets pkg:otp/inets?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git	affected 5.10 to before * otp Other versions: unknown
Erlang	OTP Package name: erlang/otp https://github.com pkg:github/erlang/otp	affected 17.0 to before * otp affected 84adefa331c4159d432d22840663c38f155cd4c1 to before * git Other versions: unknown

Identifiers

CVE-2026-23941

CNA

EEF

Weakness (CWE)

CWE-444

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.0	High	4.0	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L	CNA (EEF)

CISA KEV Not listed.
EPSS 0.0048, the 41st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 Mar 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/erlang/otp/security/advisories/GHSA-w4jc-9wpv-pqh7 vendor-advisoryrelated
cna.erlef.org/cves/CVE-2026-23941.html related
osv.dev/vulnerability/EEF-CVE-2026-23941 related
www.erlang.org/doc/system/versions.html#order-of-versions version-scheme
github.com/erlang/otp/commit/a4b46336fd25aa100ac602eb9a627aaead7eda18 patch
github.com/erlang/otp/commit/a761d391d8d08316cbd7d4a86733ba932b73c45b patch
github.com/erlang/otp/commit/e775a332f623851385ab6ddb866d9b150612ddf6 patch

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.