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Critical · 9.8 Scanner template Public exploit CVE-2026-77806 EUVD-2026-63948GHSA-vgr8-rqwx-wqrp

SPIP before 4.4.21 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is rela…

Published Aug 21, 2026 · Updated Aug 21, 2026 · Assigned by mitre

Vendor: SPIP Product: SPIP Package: spip Package: spip Ecosystem: Debian Ecosystem: Ubuntu

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.

Affected products

VendorProductAffectedFixed
SPIP SPIP < 4.4.21 4.4.21

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 spip 4.4.21+dfsg-1 —
Debian 13 spip 4.4.21+dfsg-0+deb13u1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS spip No fix yet —
Ubuntu 24.04 LTS spip No fix yet —
Ubuntu 22.04 LTS spip No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS spip No fix yet —
Ubuntu Pro 18.04 LTS spip No fix yet —
Ubuntu Pro 16.04 LTS spip No fix yet —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References