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TI-2018-15815 Aliases CVE-2018-1000164GHSA-32pc-xphx-q4f6

gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in…

Priority LOW 37CWE-93Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in "process_headers" function in "gunicorn/http/wsgi.py" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.

Why it matters now

EPSS 0.02369 83rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Partial gunicorn (PyPI): 19.5.0Red Hat: 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—gunicorn (PyPI)before 19.5.019.5.0Patch availableGHSA-32pc-xphx-q4f6
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • gunicorn (PyPI) Vendor— Affected before 19.5.0 Fixed in 19.5.0 Patch available GHSA-32pc-xphx-q4f6

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:gunicorn:gunicorn:19.4.5:*:*:*:*:*:*:*19.4.5VulnerableGunicorn
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:gunicorn:gunicorn:19.4.5:*:*:*:*:*:*:* Versions 19.4.5 Vulnerable ·Gunicorn
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

  • Fix · GHSA-32pc-xphx-q4f6 gunicorn (PyPI) Fixed in 19.5.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Storage Console 2AffectedNo fix planned: Will not fix
Not affected: 2 products
  • Red Hat OpenStack Platform 12 (Pike)
  • Red Hat OpenStack Platform 13 (Queens)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1000164
  2. 2026-10-03 Alias added: GHSA-32pc-xphx-q4f6

References

Exploit 2

Advisory 4

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences