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CVE-2026-73812

inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length

Published: Sep 1, 2026Updated: Sep 8, 2026 Sources: CVE List NVDCWE-444
N/ACVSS
NVD MITRE
EPSS Score
0.3%
Top 77.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

Description

httpd function check_header/3 rejects duplicate Content-Length (per CVE-2026-23941) but never checks for the TE+CL co-presence that RFC 9112 §6.3 identifies as a probable smuggling attempt. handle_body/3 frames by chunked and silently discards Content-Length. A CL-preferring front-end paired with chunked-preferring inets creates a classic CL.TE front-end/back-end desync. This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.

No summary for this CVE yet.

Weaknesses

CWE-444

Affected Products

Erlang
oss-projectaka erlang/ssh, otp, erlang/otp
OTPLibraryLibrary
OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

https://github.com/erlang/otp/security/advisories/GHSA-7j6m-4ffg-hg46
github.com
https://cna.erlef.org/cves/CVE-2026-73812.html
cna.erlef.org
https://osv.dev/vulnerability/EEF-CVE-2026-73812
osv.dev
and 1 more references View all →
News mentions
1

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