{"id":"CVE-2026-48801","title":"linkify-it: linkify-it: Denial of Service via algorithmic complexity vulnerability (CVE-2026-48801)","summary":"A flaw was found in linkify-it, a library for recognizing links with full Unicode support. The LinkifyIt.prototype.match function, the package's primary public API, has an algorithmic complexity of O(N²) for inputs containing many fuzzy li…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-1333","vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4.18","affected":["migration_toolkit_for_virtualization","node_healthcheck_operator","openshift_pipelines","build_of_podman_desktop","openshift_container_platform 4","openshift_dev_spaces","enterprise_linux_extensions_channel_v_10","ansible_automation_platform 2.1","ansible_automation_platform 2.2","developer_hub 1.10","hardened_images","openshift_ai 3.4","openshift_container_platform 4.21","openshift_container_platform 4.22","openshift_container_platform 4.2","openshift_data_foundation 4.18"],"patched":["enterprise_linux_extensions_channel_v_10","ansible_automation_platform 2.1","ansible_automation_platform 2.2","developer_hub 1.10","hardened_images","openshift_ai 3.4","openshift_container_platform 4.21","openshift_container_platform 4.22","openshift_container_platform 4.2","openshift_data_foundation 4.18"],"published":"2026-07-14","updated":"2026-09-08","sourceUpdated":"2026-09-08T11:30:52+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48801.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48801.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-48801"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2500656"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-48801"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48801"},{"url":"https://github.com/markdown-it/linkify-it/commit/6be6d15e0641bf1daeaa977d500cabc743166159"},{"url":"https://github.com/markdown-it/linkify-it/security/advisories/GHSA-22p9-wv53-3rq4"},{"url":"https://access.redhat.com/errata/RHSA-2026:57590"},{"url":"https://access.redhat.com/errata/RHSA-2026:50850"},{"url":"https://access.redhat.com/errata/RHSA-2026:42815"},{"url":"https://access.redhat.com/errata/RHSA-2026:51162"},{"url":"https://access.redhat.com/errata/RHSA-2026:48126"},{"url":"https://access.redhat.com/errata/RHSA-2026:49642"},{"url":"https://access.redhat.com/errata/RHSA-2026:38187"},{"url":"https://access.redhat.com/errata/RHSA-2026:60520"},{"url":"https://access.redhat.com/errata/RHSA-2026:60477"},{"url":"https://access.redhat.com/errata/RHSA-2026:51038"},{"url":"https://access.redhat.com/errata/RHSA-2026:60441"},{"url":"https://access.redhat.com/errata/RHSA-2026:60446"},{"url":"https://access.redhat.com/errata/RHSA-2026:56431"},{"url":"https://github.com/advisories/GHSA-22p9-wv53-3rq4"}],"tags":["csaf","vex","red-hat","ghsa","npm"],"epss":0.00366,"epssPercentile":0.30333,"ecosystem":"npm","ingestedAt":"2026-06-29T13:24:35.267Z","slug":"CVE-2026-48801","body":"## Overview\n\nA flaw was found in linkify-it, a library for recognizing links with full Unicode support. The LinkifyIt.prototype.match function, the package's primary public API, has an algorithmic complexity of O(N²) for inputs containing many fuzzy links or emails. This can be exploited by a remote attacker sending a specially crafted request body, leading to a worker-process denial of service (DoS) due to excessive CPU usage when synchronously rendering untrusted Markdown with linkify enabled.\n\n## Vendor advisories\n\n- **RHSA-2026:57590** · Red Hat · fixed in: Red Hat Enterprise Linux Extensions Channel (v. 10) · released 2026-08-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:57590)\n- **RHSA-2026:50850** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.1 · released 2026-08-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:50850)\n- **RHSA-2026:42815** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.2 · released 2026-07-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:42815)\n- **RHSA-2026:51162** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.2 · released 2026-08-06 · [advisory](https://access.redhat.com/errata/RHSA-2026:51162)\n- **RHSA-2026:48126** · Red Hat · fixed in: Red Hat Developer Hub 1.10 · released 2026-07-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:48126)\n- **RHSA-2026:49642** · Red Hat · fixed in: Red Hat Developer Hub 1.10 · released 2026-08-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:49642)\n- **RHSA-2026:38187** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-07-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:38187)\n- **RHSA-2026:60520** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-08-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:60520)\n- **RHSA-2026:60477** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.21 · released 2026-09-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:60477)\n- **RHSA-2026:51038** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.22 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:51038)\n- **RHSA-2026:60441** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.22 · released 2026-09-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:60441)\n- **Red Hat VEX** · Moderate · affected: Migration Toolkit for Virtualization, Node HealthCheck Operator, OpenShift Pipelines, Red Hat Build of Podman Desktop, Red Hat OpenShift Container Platform 4, Red Hat OpenShift Dev Spaces · no fix planned: Migration Toolkit for Virtualization, Node HealthCheck Operator, OpenShift Pipelines, Red Hat Build of Podman Desktop, … · updated 2026-09-08 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48801.json)\n\n**linkify-it: linkify-it: Denial of Service via algorithmic complexity vulnerability** — rated Moderate by Red Hat. Released 2026-07-14, updated 2026-09-08.\n\nAffected:\n\n- Migration Toolkit for Virtualization\n- Node HealthCheck Operator\n- OpenShift Pipelines\n- Red Hat Build of Podman Desktop\n- Red Hat OpenShift Container Platform 4\n- Red Hat OpenShift Dev Spaces\n\nFixed:\n\n- Red Hat Enterprise Linux Extensions Channel (v. 10)\n- Red Hat Ansible Automation Platform 2.1\n- Red Hat Ansible Automation Platform 2.2\n- Red Hat Developer Hub 1.10\n- Red Hat Hardened Images\n- Red Hat OpenShift AI 3.4\n- Red Hat OpenShift Container Platform 4.21\n- Red Hat OpenShift Container Platform 4.22\n- Red Hat OpenShift Container Platform 4.2\n- Red Hat Openshift Data Foundation 4.18\n\nNo fix planned:\n\n- Migration Toolkit for Virtualization\n- Node HealthCheck Operator\n- OpenShift Pipelines\n- Red Hat Build of Podman Desktop\n- Red Hat OpenShift Container Platform 4\n- Red Hat OpenShift Dev Spaces\n\nNot affected:\n\n- Red Hat Developer Hub 1.10\n- Red Hat OpenShift AI 3.4\n- Red Hat OpenShift Container Platform 4.21\n- Red Hat OpenShift Container Platform 4.22\n- Red Hat OpenShift Container Platform 4.2\n- Red Hat Openshift Data Foundation 4.18\n- Red Hat Hardened Images\n- Red Hat OpenShift Container Platform 4\n- Red Hat OpenShift Virtualization 4\n\n## Remediation\n\nFor details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:57590\nFor more about Ansible plugins for Red Hat Developer Hub, see References links https://access.redhat.com/errata/RHSA-2026:50850\nFor more about Ansible plugins for Red Hat Developer Hub, see References links https://access.redhat.com/errata/RHSA-2026:42815\n\n## Package advisory (CVE-2026-48801)\n\nAffected packages:\n\n- `linkify-it <= 5.0.0`\n\nPatched in:\n\n- `linkify-it 5.0.1`\n\nSource: https://github.com/advisories/GHSA-22p9-wv53-3rq4","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":5273,"id":"CVE-2026-48801","ts":1788887259395,"field":"cvss","old":null,"new":"7.5"},{"seq":4156,"id":"CVE-2026-48801","ts":1788886376170,"field":"cvss","old":"7.5","new":null},{"seq":3207,"id":"CVE-2026-48801","ts":1788883133728,"field":"cvss","old":null,"new":"7.5"}]}