SPIP (< 4.4.20) - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/products/spip--4.4.20/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioTue, 27 Oct 2026 10:52:42 +0000https://feed.craftedsignal.io/favicon-32x32.pngCraftedSignal Threat Feedhttps://feed.craftedsignal.io/3232https://feed.craftedsignal.io/favicon.svgSPIP: Unauthenticated Remote Code Execution (CVE-2026-77647)https://feed.craftedsignal.io/briefs/2026-10-spip-rce-cve-2026-77647/Tue, 27 Oct 2026 10:52:42 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-10-spip-rce-cve-2026-77647/A critical unauthenticated remote code execution vulnerability in SPIP, involving the X-Spip-Filtre header, has available public proof-of-concept exploits, presenting a high risk for unpatched web servers.CVE-2026-77647 is a critical remote code execution vulnerability affecting the SPIP web publishing system. The flaw is triggered via the 'X-Spip-Filtre' HTTP header, allowing unauthenticated attackers to execute arbitrary code on the target server. The vulnerability has a CVSS 3.1 score of 9.8. Proof-of-concept exploit code is publicly available, increasing the likelihood of exploitation.

Impact

Successful exploitation allows for unauthenticated remote code execution, leading to full server compromise, data exfiltration, or complete loss of availability.

Recommendation

  • Identify all internet-facing SPIP installations within your environment.
  • Patch SPIP instances immediately to the vendor-recommended version addressing CVE-2026-77647.
  • Monitor web server access logs for anomalous HTTP requests containing the 'X-Spip-Filtre' header.
  • Block identified malicious IP addresses associated with exploit attempts at the perimeter firewall or WAF.
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