7.5

CVE-2024-6827: HTTP Request Smuggling in benoitc/gunicorn

Deferred
AliasesSUSE-SU-2025:1002-1SUSE-SU-2025:1008-1GHSA-hc5x-x2vx-497g
Published 20-03-2025Last modified 15-10-2025

Vulnerability summary

CVE-2024-6827 is a high (CVSS 7.5) vulnerability in benoitc benoitc/gunicorn. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56.8% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.0 (CVE.org)
EPSS score
0.81%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 3
CGA-9FQH-J4PQ-V3RPCGA-FHHP-J2F9-98RFCGA-XXGJ-JH76-4J4G

Timeline

  1. 20-03-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2025
    Last modifiedVulnerability information updated.

Description

Gunicorn version 21.2.0 does not properly validate the value of the 'Transfer-Encoding' header as specified in the RFC standards, which leads to the default fallback method of 'Content-Length,' making it vulnerable to TE.CL request smuggling. This vulnerability can lead to cache poisoning, data exposure, session manipulation, SSRF, XSS, DoS, data integrity compromise, security bypass, information leakage, and business logic abuse.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.81%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.79% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse13 products
  • python-gunicorn&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS< 20.1.0-150400.12.9.1
  • python-gunicorn&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS< 20.1.0-150400.12.9.1
  • python-gunicorn&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS< 20.1.0-150400.12.9.1
  • python-gunicorn&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS< 20.1.0-150400.12.9.1
  • python-gunicorn&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP3< 19.7.1-150000.3.10.1
Chainguard8 products
  • emissary< 3.9.1-r14
  • emissary-apiext< 3.9.1-r14
  • emissary-oci-entrypoint< 3.9.1-r14
  • py3.10-ambassador< 3.9.1-r14
  • py3.11-ambassador< 3.9.1-r14
Wolfi8 products
  • emissary< 3.9.1-r14
  • emissary-apiext< 3.9.1-r14
  • emissary-oci-entrypoint< 3.9.1-r14
  • py3.10-ambassador< 3.9.1-r14
  • py3.11-ambassador< 3.9.1-r14
Benoitc1 product
Debian1 product
  • gunicornAll versions (No fix recorded) | < 23.0.0-1
Opensuse1 product
  • python-gunicorn&distro=openSUSE Leap 15.6< 20.1.0-150400.12.9.1
PyPI1 product
  • gunicorn< 22.0.0
Ubuntu1 product
  • gunicornAll versions (No fix recorded)

8 vendors · 34 products

References

16 links
Show all 16 references