CVE-2025-30346
mediumpriority · track · 19EPSS 0.003 · 24 %ileDEEURUUSEPSS · scored 2026-10-27
Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (15)
Products and version ranges known to be affected.
- varnish cache project varnish cache< 7.6.2nvdUScpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*
- varnish-software varnish enterprise= 6.0.11nvdUScpe:2.3:a:varnish-software:varnish_enterprise:*:*:*:*:*:*:*:*
- varnish-software varnish enterprise= 6.0.12nvdUScpe:2.3:a:varnish-software:varnish_enterprise:*:*:*:*:*:*:*:*
- varnish-software varnish enterprise= 6.0.13nvdUScpe:2.3:a:varnish-software:varnish_enterprise:*:*:*:*:*:*:*:*
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-0585Varnish HTTP Cache: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2025-03-18csaf · cert_bundDE
Ein Angreifer kann eine Schwachstelle in Varnish HTTP Cache ausnutzen, um Daten zu manipulieren, vertrauliche Informationen preiszugeben oder Sicherheitsmaßnahmen zu umgehen.
- BIT-varnish-2025-303462025-03-25vendor · osvUS
Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (5)
External citations — patches, advisories, analysis.
- https://varnish-cache.org/security/VSV00015.htmlcnnvd
- https://vigilance.fr/vulnerability/Varnish-Cache-header-injection-via-Client-side-Desync-46620cnnvd
- https://varnish-cache.org/security/VSV00015.htmlenisa_euvd
- https://lists.debian.org/debian-lts-announce/2025/03/msg00027.htmlnvd
- https://varnish-cache.org/security/VSV00015.htmlVendor Advisorynvd
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