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CVE-2026-77806 is an unauthenticated remote code execution vulnerability in SPIP affecting versions prior to 4.4.21. The flaw is caused by improper handling of the X-Spip-Filtre HTTP request header by the analyse_resultat_skel functionality, resulting in code injection. A remote attacker can send a crafted request that triggers execution of arbitrary code within the context of the SPIP application. The issue has been reported as exploited in the wild in August 2026.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Small Python repository containing two scripts targeting a SPIP web application endpoint. exp.py is the main exploit: it accepts a base URL and optional command, then sends a POST request to /spip.php with a crafted parameter containing injected PHP code that sets an X-Spip-Filtre header chain ending in system, while the POST body supplies the command (default: id). The script prints the full server response, indicating intended remote command execution. scan.py is a companion vulnerability checker: it sends a GET request to /spip.php with a randomized parameter name whose value injects PHP calling phpinfo(), then looks for phpinfo markers in the response and extracts disable_functions if present. Repository structure is minimal: LICENSE, a very short README, and the two Python scripts. No framework is used, no persistence or post-exploitation modules are present, and the code is a straightforward operational PoC for SPIP web RCE plus a basic scanner.
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12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unpatched vulnerability identified as CVE-2026-77806 affecting Debian Linux/SPIP-related package context, with high CVSS v3 impact metrics and no known exploits available at the time of publication.
An unauthenticated remote code execution vulnerability in SPIP caused by mishandling of the X-Spip-Filtre HTTP request header in analyse_resultat_skel, affecting versions before 4.4.21.
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.