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CRITICAL

CVE-2026-77647

CVSS v3

9.8

CRITICAL

EPSS Score

2.5 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-08-20
Last Modified
2026-08-21

Frequently asked questions

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.

Is CVE-2026-77647 actively exploited?

Active exploitation of CVE-2026-77647 has not been confirmed. Its EPSS score was 2.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-77647?

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

Is CVE-2026-77647 affecting your environment?

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