SOAP: Unbounded Recursion in Server-Side cleanup_xml_node
cleanup_xml_node() in the SOAP XML parser recurses once per XML nesting level with no depth limit. An unauthenticated attacker can post a SOAP request containing tens of thousands of nested elements to any SoapServer endpoint, exhaust the stack and crash the process. The same unbounded recursion exists in the SOAP value decoder and in the WSDL node search helper.
CVE-2026-91765
Primary source · Revision 2
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-91765
PHP
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "PHP Group",
"product": "PHP",
"versions": [
{
"status": "affected",
"version": "8.2.*",
"lessThan": "8.2.34",
"versionType": "semver"
},
{
"status": "affected",
"version": "8.3.*",
"lessThan": "8.3.35",
"versionType": "semver"
},
{
"status": "affected",
"version": "8.4.*",
"lessThan": "8.4.26",
"versionType": "semver"
},
{
"status": "affected",
"version": "8.5.*",
"lessThan": "8.5.11",
"versionType": "semver"
}
],
"packageName": "ext-soap",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-91765
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #59663 · Revision 2
- Added to Heist Feed
- Publisher date