CVE-2025-47905
varnish - security update
5.4
MEDIUM
CVSS 3.1
EPSS 0.29%
Description
Varnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, because the product incorrectly permits CRLF to be skipped to delimit chunk boundaries.
How to fix CVE-2025-47905
To remediate CVE-2025-47905, upgrade the affected package to a fixed version below.
- Alpine/varnish—upgrade to 7.6.3-r0 or later
- —upgrade to 6.6.2 or later
- —upgrade to 6.5.1-1+deb11u5 or later
- —upgrade to 6.5.1-1+deb11u5 or later
Is CVE-2025-47905 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 7.6.3-r0
- from 0, < 6.6.2, >= 7.0.0
- from 0, < 6.5.1-1+deb11u5
- from 0, < 6.5.1-1+deb11u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |