CVE-2026-77647
Critical · CVSS 9.8Published 2026-08-20
CVSS
9.8
Critical
EPSS
—
exploit probability
Active Exploit
No
not yet listed
High — patch soon — High severity. Target patch within 7 days.
What is CVE-2026-77647?
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.
Likely affects:PythonPHP
CVSS Score Explained
CVSS 9.8 is Critical — the highest severity tier. Attackers can likely exploit this remotely with no authentication and cause full system compromise. Patch immediately.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-20.html
- ›https://lists.debian.org/debian-security-announce/2026/msg00359.html
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