Skip to main content
MEDIUM

CVE-2026-56860

CVSS v3

5.9

MEDIUM

EPSS Score

0.5 %

exploit probability, as of 2026-10-17

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for net/url. Watch net/url in CVE Watch Free account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • golangBitnamiall versions · fixed in 1.25.13
  • stdlibGoall versions · fixed in 1.25.13
  • aardvark-dnsAlmaLinux:8all versions · fixed in 2:1.10.1-2.module_el8.10.0+3901+4b80ecd7
  • buildahAlmaLinux:10all versions · fixed in 2:1.43.1-6.el10_2and 1 other package
  • buildahAlmaLinux:9all versions · fixed in 2:1.43.3-2.el9_8and 1 other package
  • buildahAlmaLinux:8all versions · fixed in 2:1.33.14-6.module_el8.10.0+4269+94686149and 1 other package
  • cockpit-podmanAlmaLinux:8all versions · fixed in 84.1-1.module_el8.10.0+4102+6c76e544
  • conmonAlmaLinux:8all versions · fixed in 3:2.1.10-1.module_el8.10.0+3845+87b84552

49 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-56860 Red Hat Product Security8,130 products fixed · 259 known affected

    net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution

    rhai/assisted-installer-rhel9 as a component of Assisted Installer for Red Hat OpenShift Container Platform 2 · albo/aws-load-balancer-operator as a component of AWS Load Balancer Operator · compliance/openshift-compliance-rhel8-operator as a component of Compliance Operator

  • RHSA-2026:82843 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: OpenShift Virtualization v4.22 Images

  • RHSA-2026:73864 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.14.75 packages and security update

  • RHSA-2026:74797 Red Hat Product Security24 products fixed

    Red Hat Security Advisory: Red Hat build of MicroShift 4.20.41 security update

  • RHSA-2026:73869 Red Hat Product Security628 products fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.14.75 bug fix and security update

  • RHSA-2026:77899 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Web Terminal Operator 1.11.2 release.

188 more advisories

Full record on NVD

Description

Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte buffer using index-based backtracking for '..' segments, eliminating the quadratic time complexity and significantly reducing memory allocations.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-08-13
Last Modified
2026-08-14

Frequently asked questions

What is CVE-2026-56860?

Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte buffer using index-based backtracking for '..' segments, eliminating the quadratic time complexity and significantly reducing memory allocations.

Is CVE-2026-56860 actively exploited?

Active exploitation of CVE-2026-56860 has not been confirmed. Its EPSS score was 0.5% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-56860?

CVE-2026-56860 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running net/url? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this productCISA KEV additions, October 2026Search CVEs

Already have an account? Open CVE WatchNo credit card required · 50 free checks/month · Free API key

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database