# CVE-2025-47905: varnish: Varnish Cache is a high-performance HTTP accelerator CVE-2025-47905 is fixed in 4 products on 1 platform, first by RHSA-2025:8550, released May 13, 2025. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2025-47905 - Priority: High - CVSS: 8.1 (Important) - EPSS: 0.0037 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 13, 2025 ## Description Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up. Security Fix(es): * varnish: request smuggling attacks (CVE-2025-47905) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | varnish Debian 11.6 (bullseye) | 6.5.1-1+deb11u5 | [DLA-4187-1](https://patchblox.com/security/data/fix/linux/dla-4187-1.md) | May 28, 2025 | | Linux | varnish Debian 12.15 (bookworm) | 7.1.1-2+deb12u1 | [DEBIAN-CVE-2025-47905](https://patchblox.com/security/data/fix/linux/debian-cve-2025-47905.md) | May 13, 2025 | | Linux | varnish Debian 13.5 (trixie) | 7.7.0-2 | [DEBIAN-CVE-2025-47905](https://patchblox.com/security/data/fix/linux/debian-cve-2025-47905.md) | May 13, 2025 | | Linux | varnish RHEL 10 | 7.6.1-2.el10_0.1 | [RHSA-2025:8550](https://patchblox.com/security/data/fix/linux/rhsa-2025-8550.md) | May 13, 2025 | | Linux | varnish RHEL 8 | 0:6.0.13-1.module+el8.10.0+23111+831cc069.1 | [RHSA-2025:8336](https://patchblox.com/security/data/fix/linux/rhsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish RHEL 9 | 0:6.6.2-6.el9_6.1 | [RHSA-2025:8337](https://patchblox.com/security/data/fix/linux/rhsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish almalinux 10 | 7.6.1-2.el10_0.1 | [ALSA-2025:8550](https://patchblox.com/security/data/fix/linux/alsa-2025-8550.md) | Jun 4, 2025 | | Linux | varnish almalinux 8 | 6.0.13-1.module_el8.10.0+4003+9759c3c1.1 | [ALSA-2025:8336](https://patchblox.com/security/data/fix/linux/alsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish almalinux 9 | 6.6.2-6.el9_6.1 | [ALSA-2025:8337](https://patchblox.com/security/data/fix/linux/alsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish ol 10 | 0:7.6.1-2.el10_0.1 | [ELSA-2025-8550](https://patchblox.com/security/data/fix/linux/elsa-2025-8550.md) | Jun 26, 2025 | | Linux | varnish ol 8 | 0:6.0.13-1.module+el8.10.0+90594+95ad0b53.1 | [ELSA-2025-8336](https://patchblox.com/security/data/fix/linux/elsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish ol 9 | 0:6.6.2-6.el9_6.1 | [ELSA-2025-8337](https://patchblox.com/security/data/fix/linux/elsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish rocky 10 | 0:7.6.1-2.el10_0.1 | [RLSA-2025:8550](https://patchblox.com/security/data/fix/linux/rlsa-2025-8550.md) | Oct 3, 2025 | | Linux | varnish rocky 8 | 0:6.0.13-1.module+el8.10.0+1982+334a201b.1 | [RLSA-2025:8336](https://patchblox.com/security/data/fix/linux/rlsa-2025-8336.md) | Jul 29, 2025 | | Linux | varnish rocky 9 | 0:6.6.2-6.el9_6.1 | [RLSA-2025:8337](https://patchblox.com/security/data/fix/linux/rlsa-2025-8337.md) | Oct 4, 2025 | | Linux | varnish-devel RHEL 8 | 0:6.0.13-1.module+el8.10.0+23111+831cc069.1 | [RHSA-2025:8336](https://patchblox.com/security/data/fix/linux/rhsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-devel RHEL 9 | 0:6.6.2-6.el9_6.1 | [RHSA-2025:8337](https://patchblox.com/security/data/fix/linux/rhsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish-devel almalinux 10 | 7.6.1-2.el10_0.1 | [ALSA-2025:8550](https://patchblox.com/security/data/fix/linux/alsa-2025-8550.md) | Jun 4, 2025 | | Linux | varnish-devel almalinux 8 | 6.0.13-1.module_el8.10.0+4003+9759c3c1.1 | [ALSA-2025:8336](https://patchblox.com/security/data/fix/linux/alsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-devel almalinux 9 | 6.6.2-6.el9_6.1 | [ALSA-2025:8337](https://patchblox.com/security/data/fix/linux/alsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish-devel ol 10 | 0:7.6.1-2.el10_0.1 | [ELSA-2025-8550](https://patchblox.com/security/data/fix/linux/elsa-2025-8550.md) | Jun 26, 2025 | | Linux | varnish-devel ol 8 | 0:6.0.13-1.module+el8.10.0+90594+95ad0b53.1 | [ELSA-2025-8336](https://patchblox.com/security/data/fix/linux/elsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-devel ol 9 | 0:6.6.2-6.el9_6.1 | [ELSA-2025-8337](https://patchblox.com/security/data/fix/linux/elsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish-docs RHEL 8 | 0:6.0.13-1.module+el8.10.0+23111+831cc069.1 | [RHSA-2025:8336](https://patchblox.com/security/data/fix/linux/rhsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-docs RHEL 9 | 0:6.6.2-6.el9_6.1 | [RHSA-2025:8337](https://patchblox.com/security/data/fix/linux/rhsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish-docs almalinux 10 | 7.6.1-2.el10_0.1 | [ALSA-2025:8550](https://patchblox.com/security/data/fix/linux/alsa-2025-8550.md) | Jun 4, 2025 | | Linux | varnish-docs almalinux 8 | 6.0.13-1.module_el8.10.0+4003+9759c3c1.1 | [ALSA-2025:8336](https://patchblox.com/security/data/fix/linux/alsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-docs almalinux 9 | 6.6.2-6.el9_6.1 | [ALSA-2025:8337](https://patchblox.com/security/data/fix/linux/alsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish-docs ol 10 | 0:7.6.1-2.el10_0.1 | [ELSA-2025-8550](https://patchblox.com/security/data/fix/linux/elsa-2025-8550.md) | Jun 26, 2025 | | Linux | varnish-docs ol 8 | 0:6.0.13-1.module+el8.10.0+90594+95ad0b53.1 | [ELSA-2025-8336](https://patchblox.com/security/data/fix/linux/elsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-docs ol 9 | 0:6.6.2-6.el9_6.1 | [ELSA-2025-8337](https://patchblox.com/security/data/fix/linux/elsa-2025-8337.md) | Jun 2, 2025 | | Linux | varnish-modules RHEL 8 | 0:0.15.0-6.module+el8.10.0+21682+bcdd3a30 | [RHSA-2025:8336](https://patchblox.com/security/data/fix/linux/rhsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-modules almalinux 8 | 0.15.0-6.module_el8.9.0+3826+307eaba4 | [ALSA-2025:8336](https://patchblox.com/security/data/fix/linux/alsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-modules ol 8 | 0:0.15.0-6.module+el8.10.0+90594+95ad0b53 | [ELSA-2025-8336](https://patchblox.com/security/data/fix/linux/elsa-2025-8336.md) | Jun 2, 2025 | | Linux | varnish-modules rocky 8 | 0:0.15.0-6.module+el8.5.0+677+2a78a869 | [RLSA-2025:8336](https://patchblox.com/security/data/fix/linux/rlsa-2025-8336.md) | Jul 29, 2025 | --- Data as of 2026-11-09T13:31:49Z UTC. 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