Boolean XPath expressions that evaluate to true can cause an infinite loop in logicalQuery.Select, leading to 100% CPU usage. This can be triggered by top-level selectors such as "1=1" or "true()".
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 5
https://github.com/antchfx/xpath/commit/afd4762cc342af56345a3fb4002a59281fcab494
security@golang.org
https://github.com/antchfx/xpath/issues/121
security@golang.org
https://github.com/golang/vulndb/issues/4526
security@golang.org
https://pkg.go.dev/vuln/GO-2026-4526
security@golang.org
https://securityinfinity.com/research/infinite-loop-dos-in-antchfx-xpath-logica…
134c704f-9b21-4f2e-91b3-4a467353bcc0