Is CVE-2026-77647 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-77647?

CVE-2026-77647 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-77647

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.