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CVE-2026-77647 is a critical remote code execution vulnerability affecting SPIP versions prior to 4.4.20. The flaw allows unauthenticated attackers to execute arbitrary code over the network without user interaction. The issue is associated with incorrect identification of PHP opening blocks and with var_export mishandling certain edge cases involving the presence of a '<' character, creating conditions under which attacker-controlled input can be transformed into executable PHP code. The vulnerability was reported as exploited in the wild in August 2026.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unpatched vulnerability identified as CVE-2026-77647, referenced in a Nessus plugin entry affecting Debian Linux environments.
A critical unauthenticated remote code execution vulnerability in SPIP affecting versions before 4.4.20.
An unauthenticated remote code execution vulnerability in SPIP's template engine caused by PHP function-call injection via the X-Spip-Filtre header handling in analyse_resultat_skel(), allowing attacker-controlled command execution through the intval|_request|system filter chain.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.