High [CVE-2026-56860] golang net/url: Denial of Service from quadratic complexity in path resolution
This high-severity Red Hat Linux advisory covers CVE-2026-56860 affecting Assisted Installer for Red Hat OpenShift Container Platform 2, AWS Load Balancer Operator, Builds for Red Hat OpenShift.
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Summary
A flaw was found in `net/url`, a component of `golang`. This vulnerability arises when resolving relative paths that contain numerous parent directory ('..') segments.
A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory allocation. This can result in a Denial of Service (DoS) due to resource exhaustion.
Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770.
Affected products named by the advisory: Assisted Installer for Red Hat OpenShift Container Platform 2; AWS Load Balancer Operator; Builds for Red Hat OpenShift; cert-manager Operator for Red Hat OpenShift; and 53 more.
Affected products named by the advisory: Compliance Operator; Confidential Compute Attestation; Cryostat 4; Custom Metric Autoscaler operator for Red Hat Openshift; and 49 more.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
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