8.3

CVE-2026-73276: erlang otp HTTP Request/Response Smuggling

CVSS: 8.3v4.0HighDeferred
AliasesUBUNTU-CVE-2026-73276DEBIAN-CVE-2026-73276
Published 01-09-2026Last modified 08-09-2026
Open JSON

Vulnerability summary

CVE-2026-73276 is a high (CVSS 8.3) HTTP Request/Response Smuggling vulnerability in erlang otp. EPSS estimates a 0.58% chance of exploitation in the next 30 days, higher than 46.3% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v4.0 (CVE.org)
EPSS score
0.58%
0%100%
Low · +0.25 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-8827-1

Timeline

  1. 01-09-2026
    PublishedVulnerability first disclosed.
  2. 08-09-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.58%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

+0.25 pp

From 0.33% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.58%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • erlangAll versions (No fix recorded) | < 1:29.0.6+dfsg-1
Erlang1 product
  • otp≥ 22.2, < 27.3.4.17 | ≥ 28.0, < 28.5.0.6 | ≥ 29.0, < 29.0.6 | ≥ 7.1.2, < 9.3.2.7 | ≥ 9.4, < 9.6.2.3 | ≥ 9.7, < 9.7.2 | ≥ c06db0bedf49a9b40725745e73fa82e562612815 (No fix recorded)
Ubuntu1 product
  • erlang< 1:22.2.7+dfsg-1ubuntu0.5+esm2 | < 1:24.2.1+dfsg-1ubuntu0.7 | < 1:25.3.2.8+dfsg-1ubuntu4.7 | < 1:27.3.4.6+dfsg-1ubuntu0.1

3 vendors · 3 products

References

11 links
Show all 11 references