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TI-2022-07931 Aliases CVE-2022-23959GHSA-fcqv-r8cv-f88h

In Varnish Cache before 6.6.2 and 7.x before 7.0.2, Varnish Cache 6.0 LTS before 6.0.10…

Priority MEDIUM 43CWE-444Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

In Varnish Cache before 6.6.2 and 7.x before 7.0.2, Varnish Cache 6.0 LTS before 6.0.10, and and Varnish Enterprise (Cache Plus) 4.1.x before 4.1.11r6 and 6.0.x before 6.0.9r4, request smuggling can occur for HTTP/1 connections.

Why it matters now

EPSS 0.02011 80th percentileScored 2026-11-07
Fix Fixed Red Hat: 5 advisories

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
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:a:varnish-software:varnich_cache:*:*:*:*:-:*:*:*1.0.0 to before 6.6.2Vulnerablevarnish-software
cpe:2.3:a:varnish-software:varnich_cache:*:*:*:*:plus:*:*:*4.1.1 to before 4.1.11r6Vulnerablevarnish-software
cpe:2.3:a:varnish-software:varnich_cache:4.1:*:*:*:lts:*:*:*4.1Vulnerablevarnish-software
cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:lts:*:*:*6.0.0 to before 6.0.10Vulnerablevarnish-software
cpe:2.3:a:varnish-software:varnish_cache_plus:*:*:*:*:*:*:*:*6.0.0 to before 6.0.9r4Vulnerablevarnish-software
cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*7.0.0 to before 7.0.2VulnerableVarnish Cache Project
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:a:varnish-software:varnich_cache:*:*:*:*:-:*:*:* Versions 1.0.0 to before 6.6.2 Vulnerable ·varnish-software
  • cpe:2.3:a:varnish-software:varnich_cache:*:*:*:*:plus:*:*:* Versions 4.1.1 to before 4.1.11r6 Vulnerable ·varnish-software
  • cpe:2.3:a:varnish-software:varnich_cache:4.1:*:*:*:lts:*:*:* Versions 4.1 Vulnerable ·varnish-software
  • cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:lts:*:*:* Versions 6.0.0 to before 6.0.10 Vulnerable ·varnish-software
  • cpe:2.3:a:varnish-software:varnish_cache_plus:*:*:*:*:*:*:*:* Versions 6.0.0 to before 6.0.9r4 Vulnerable ·varnish-software
  • cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.2 Vulnerable ·Varnish Cache Project
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

Red Hat 5 advisories

  • RHSA-2022:4745 Released 2022-05-25 · Red Hat rating Important
    rh-varnish6-varnish security update
    • Red Hat Software Collections for RHEL Workstation(v. 7) rh-varnish6-varnish-6.0.8-2.el7.1, rh-varnish6-varnish-devel-6.0.8-2.el7.1, rh-varnish6-varnish-docs-6.0.8-2.el7.1 +1
    • Red Hat Software Collections for RHEL(v. 7) rh-varnish6-varnish-6.0.8-2.el7.1, rh-varnish6-varnish-devel-6.0.8-2.el7.1, rh-varnish6-varnish-docs-6.0.8-2.el7.1 +1
  • RHSA-2022:0422 Released 2022-02-03 · Red Hat rating Important
    varnish:6 security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.4) varnish-6.0.6-2.module+el8.4.0+14090+331e4860.2.aarch64::varnish:6, varnish-6.0.6-2.module+el8.4.0+14090+331e4860.2.ppc64le::varnish:6, varnish-6.0.6-2.module+el8.4.0+14090+331e4860.2.s390x::varnish:6 +15
  • RHSA-2022:0421 Released 2022-02-03 · Red Hat rating Important
    varnish:6 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) varnish-6.0.2-2.module+el8.2.0+14091+b587eafb.1.aarch64::varnish:6, varnish-6.0.2-2.module+el8.2.0+14091+b587eafb.1.ppc64le::varnish:6, varnish-6.0.2-2.module+el8.2.0+14091+b587eafb.1.s390x::varnish:6 +15
Show 2 more Red Hat advisories
  • RHSA-2022:0420 Released 2022-02-03 · Red Hat rating Important
    varnish:6 security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.1) varnish-6.0.2-2.module+el8.1.0+14093+aa8ea65f.1.ppc64le::varnish:6, varnish-6.0.2-2.module+el8.1.0+14093+aa8ea65f.1.src::varnish:6, varnish-6.0.2-2.module+el8.1.0+14093+aa8ea65f.1.x86_64::varnish:6 +7
  • RHSA-2022:0418 Released 2022-02-03 · Red Hat rating Important
    varnish:6 security update
    • Red Hat Enterprise Linux AppStream (v. 8) varnish-6.0.8-1.module+el8.5.0+14089+03a0c2cc.1.aarch64::varnish:6, varnish-6.0.8-1.module+el8.5.0+14089+03a0c2cc.1.ppc64le::varnish:6, varnish-6.0.8-1.module+el8.5.0+14089+03a0c2cc.1.s390x::varnish:6 +15

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:0418
Red Hat Enterprise Linux AppStream E4S (v. 8.1)Fixed RHSA-2022:0420
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2022:0421
Red Hat Enterprise Linux AppStream EUS (v.8.4)Fixed RHSA-2022:0422
Red Hat Software Collections for RHEL Workstation(v. 7)Fixed RHSA-2022:4745
Red Hat Software Collections for RHEL(v. 7)Fixed RHSA-2022:4745
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-23959
  2. 2026-10-03 Alias added: GHSA-fcqv-r8cv-f88h

References

Advisory 5

Sources

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