CVE-2026-77647 Code injection in SPIP
Unauthenticated remote attackers can execute arbitrary code in SPIP CMS due to incorrect PHP block identification and var_export mishandling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-77647?
CVE-2026-77647 is a critical code injection vulnerability in SPIP, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-94
Which versions are affected by CVE-2026-77647?
How do I fix CVE-2026-77647?
Upgrade to a fixed version.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-77647 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77647 exists.
Public exploit code: 1 Metasploit module and 1 proofs of concept on GitHub.
Sources
Also known as DEBIAN-CVE-2026-77647, GHSA-wj6g-rh9q-6vvm, UBUNTU-CVE-2026-77647.