CVE-2026-77647

Published Aug 20, 2026 CVSS 3.1 · 9.8 Critical EPSS 2.3% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Unauthenticated Remote Code Execution via Malformed PHP Block Parsing in SPIP <= 4.4.19
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unauthenticated Remote Code Execution via Malformed PHP Block Parsing in SPIP <= 4.4.19
Type Values Removed Values Added
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.
First Time appeared Spip
Spip spip
Weaknesses CWE-94
CPEs cpe:2.3:a:spip:spip:*:*:*:*:*:*:*:*
Vendors & Products Spip
Spip spip
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 21, 2026, 8:08 PM
Reserved
Aug 20, 2026, 10:24 PM
Status
Deferred
Published
Aug 20, 2026, 11:16 PM
Modified
Oct 26, 2026, 10:10 AM