CVE-2026-4645

Github.com/antchfx/xpath: xpath: denial of service via crafted boolean xpath expressions

CVE-2026-4645 is fixed in golang-github-antchfx-xpath on 1 platform by DEBIAN-CVE-2026-4645 (version 1.3.6-1), released March 23, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

n/a

A flaw was found in the `github.com/antchfx/xpath` component. A remote attacker could exploit this vulnerability by submitting crafted Boolean XPath expressions that evaluate to true. This can cause an infinite loop in the `logicalQuery.Select` function, leading to 100% CPU utilization and a Denial of Service (DoS) condition for the affected system.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
golang-github-antchfx-xpath · Debian 14	1.3.6-1	DEBIAN-CVE-2026-4645	Mar 23, 2026

Details

Published
March 23, 2026
Weakness
Loop with Unreachable Exit Condition ('Infinite Loop')
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4645

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