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Critical · 9.8 Public exploit CVE-2026-77647 EUVD-2026-63757GHSA-wj6g-rh9q-6vvm

SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is rela…

Published Aug 20, 2026 · Updated Aug 21, 2026 · Assigned by mitre

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

Description

SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character.

Affected products

VendorProductAffectedFixed
SPIP SPIP < 4.4.20 4.4.20

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 4.4.20+dfsg-1 —
Debian 13 spip 4.4.20+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.

Metasploit 1 module

GitHub 1 repository

  • Nxploited/CVE-2026-77647 ★ 1 · Oct 26, 2026

    SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code

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

References