CVE-2026-73276: high-severity vulnerability in Erlang OTP
inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.3epss 0.6%
Gracefulness code ignored cases that should be rejected, resulting in possible HTTP Request Smuggling opportunities.
This issue affects OTP from OTP 22.2 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 7.1.2 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
Erlang · OTPRelated CVEs — Erlang OTP
In the same product, most dangerous first.
CVE-2026-66835HIGHhttpd mod_auth directory protection bypassed by a doubled slash in the request pathEPSS 1.0%CVE-2026-69664HIGHhttpd parks a request worker indefinitely on a malformed chunk size sent after the headersEPSS 0.9%CVE-2026-73270HIGHhttpd mod_auth directory protection bypassed by request path casing on case-insensitive filesystemsEPSS 0.9%CVE-2026-70399HIGHhttpd does not enforce the documented default max_clients connection limitEPSS 0.9%CVE-2026-75538HIGHA Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated PeerEPSS 0.9%CVE-2026-59250HIGHMegaco flex scanner buffer overflow via oversized property parm nameEPSS 0.8%
References
https://cna.erlef.org/cves/CVE-2026-73276.htmlhttps://github.com/erlang/otp/commit/60add5a19e2154560fdff3fe92dba14a68bbd683https://github.com/erlang/otp/commit/6cd995e34d3bb3d36dd278dded2d62c25e71820chttps://github.com/erlang/otp/commit/c285240c6e4b93960c5dc4f17ba04e6fdfb27a0fhttps://github.com/erlang/otp/security/advisories/GHSA-6v7q-jwgh-cx8phttps://osv.dev/vulnerability/EEF-CVE-2026-73276