# CVE-2026-77806: spip: SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in Aug...

CVE-2026-77806 is fixed in spip on 1 platform, first by DEBIAN-CVE-2026-77806, released August 21, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-77806
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0448
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 21, 2026

## Description

SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to code injection via an X-Spip-Filtre HTTP request header that is mishandled by analyse_resultat_skel.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | spip Debian 13.5 (trixie) | 4.4.21+dfsg-0+deb13u1 | [DEBIAN-CVE-2026-77806](https://patchblox.com/security/data/fix/linux/debian-cve-2026-77806.md) | Aug 21, 2026 |
| Linux | spip Debian 14 | 4.4.21+dfsg-1 | [DEBIAN-CVE-2026-77806](https://patchblox.com/security/data/fix/linux/debian-cve-2026-77806.md) | Aug 21, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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