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CVE-2026-91765 is an uncontrolled-recursion vulnerability in PHP's SOAP extension. The SOAP XML parser function cleanup_xml_node() recurses once for each XML nesting level without enforcing a depth limit. Related unbounded recursion is also present in the SOAP value decoder and WSDL node-search helper. A deeply nested SOAP XML document can therefore exhaust the process stack.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An important unauthenticated denial-of-service vulnerability in PHP's SOAP XML parsing and related SOAP/WSDL helpers. Excessively nested XML elements trigger unbounded recursion, allowing remote stack exhaustion and process crashes at SoapServer endpoints.
A vulnerability referenced by a Debian Linux 13.0 security update affecting PHP 8.4 packages.
A network-reachable, low-complexity vulnerability requiring no privileges or user interaction, with high confidentiality, integrity, and availability impact according to the supplied CVSS v3 vector. The content does not state the underlying flaw type or affected component beyond the listed Debian Linux and PHP package CPEs.
A vulnerability addressed by the referenced Slackware PHP security advisory; technical vulnerability details are not provided.
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.