CVE catalog
CVE-2026-34475
Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or auth
- Severity
- Medium · CVSS 5.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.21% · Oct 25, 2026
Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle URLs with a path of / for HTTP/1.1, potentially leading to cache poisoning or authentication bypass.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | varnish | trixie | 7.7.0-3+deb13u1 | vulnerable |
| Debian | varnish | trixie-security | 7.7.0-3+deb13u2 | fixed |
| Debian | varnish | bookworm | 7.1.1-2+deb12u1 | vulnerable |
| Debian | varnish | bookworm-security | 7.1.1-2+deb12u1 | vulnerable |
| Cpe | varnish | Not reported | Not reported | vulnerable |
| Cpe | varnish_enterprise | Not reported | Not reported | unknown |
| Cpe | vinyl_cache | Not reported | 8.0.1 | fixed |
| Cpe | varnish_enterprise | Not reported | Not reported | unknown |
| Cpe | vinyl_cache | Not reported | 8.0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | varnish | source | trixie | 7.7.0-3+deb13u2 | not yet assigned | Not reported | [1132231] |
| Debian | varnish | source | bookworm | (unfixed) | not yet assigned | Not reported | [1132231] |
| Cpe | vinyl_cache | cpe | Not reported | 8.0.1 | Not reported | Not reported | Not reported |
| Cpe | vinyl_cache | cpe | Not reported | 8.0.1 | Not reported | NVD-CVE-2026-34475 | Not reported |
Notes
[bookworm] varnish: Minor issue; can be mitigated by VCL rule
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libvarnishapi3]Affected
Source package: [varnish]
Details (4)
7.1.1-2+deb12u1· amd64 · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· arm64 · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· amd64 · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· arm64 · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
- [libvarnishapi-dev]Affected
Source package: [varnish]
Details (4)
7.1.1-2+deb12u1· amd64 · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· arm64 · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· amd64 · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· arm64 · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
- [varnish]Affected
Details (4)
7.1.1-2+deb12u1· amd64 · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· arm64 · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· amd64 · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· arm64 · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
- [varnish-doc]Affected
Source package: [varnish]
Details (4)
7.1.1-2+deb12u1· all · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· all · bookwormAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· all · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
7.1.1-2+deb12u1· all · bookworm-securityAffected
nvd · varnish · debian · bookworm; nvd · varnish · debian · 12
[Debian 13 (Trixie)]
- [libvarnishapi3]Affected
Source package: [varnish]
Details (5)
7.7.0-3+deb13u1· amd64 · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· arm64 · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· amd64 · trixie-security · Historical versionAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· arm64 · trixie-securityAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u2· amd64 · trixie-securityFixed · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
- [libvarnishapi-dev]Affected
Source package: [varnish]
Details (5)
7.7.0-3+deb13u1· amd64 · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· arm64 · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· amd64 · trixie-security · Historical versionAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· arm64 · trixie-securityAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u2· amd64 · trixie-securityFixed · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
- [varnish]Affected
Details (5)
7.7.0-3+deb13u1· amd64 · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· arm64 · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· amd64 · trixie-security · Historical versionAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· arm64 · trixie-securityAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u2· amd64 · trixie-securityFixed · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
- [varnish-doc]Affected
Source package: [varnish]
Details (5)
7.7.0-3+deb13u1· all · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· all · trixieAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· all · trixie-security · Historical versionAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u1· all · trixie-securityAffected · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
7.7.0-3+deb13u2· all · trixie-securityFixed · Fixed:
7.7.0-3+deb13u2nvd · varnish · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-34475]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-34475]
- [https://security-tracker.debian.org/tracker/CVE-2026-34475]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34475.json]
- [https://vinyl-cache.org/security/VSV00018.html]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0749.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]