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CVE-2026-73276

inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i

HIGH
8.3
CVSS Score
Published: September 1, 2026 at 02:41 PM UTC
Updated: September 8, 2026 at 01:17 AM UTC
1 product affected across 1 vendorErlang /otp

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Severity
HIGH8.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Erlang /otp· Erlang
95%
22.2 ≤ v < 27.3.4.1728.0 ≤ v < 28.5.0.629.0 ≤ v < 29.0.67.1.2 ≤ v < 9.3.2.79.4 ≤ v < 9.6.2.39.7 ≤ v < 9.7.222.228.029.07.1.29.49.7c06db0bedf49a9b40725745e73fa82e562612815
Affected range stops below 27.3.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 28.5.0.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 29.0.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.3.2.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.6.2.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.7.2, so it looks safe — our inference, not a vendor statement

References (6)

Vendor Advisory
Source: cverecord
https://github.com/erlang/otp/security/advisories/GHSA-6v7q-jwgh-cx8p
Related
Source: cverecord
https://cna.erlef.org/cves/CVE-2026-73276.html
Related
Source: cverecord
https://osv.dev/vulnerability/EEF-CVE-2026-73276
Patch
Source: cverecord
https://github.com/erlang/otp/commit/60add5a19e2154560fdff3fe92dba14a68bbd683
Patch
Source: cverecord
https://github.com/erlang/otp/commit/6cd995e34d3bb3d36dd278dded2d62c25e71820c
Patch
Source: cverecord
https://github.com/erlang/otp/commit/c285240c6e4b93960c5dc4f17ba04e6fdfb27a0f

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.3HIGHEEF
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-444

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