AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-776

https://access.redhat.com/errata/RHSA-2026:6174

https://access.redhat.com/errata/RHSA-2026:6802

https://access.redhat.com/errata/RHSA-2026:7110

https://access.redhat.com/errata/RHSA-2026:7128

https://access.redhat.com/security/cve/CVE-2026-26278

https://bugzilla.redhat.com/show_bug.cgi?id=2441120

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26278.json

[{"vendor":"Red Hat","product":"Red Hat Advanced Cluster Security for Kubernetes 4.8","defaultStatus":"affected","cpes":["cpe:/a:redhat:advanced_cluster_security:4.8::el8"]},{"vendor":"Red Hat","product":"Red Hat Advanced Cluster Security for Kubernetes 4.9","defaultStatus":"affected","cpes":["cpe:/a:redhat:advanced_cluster_security:4.9::el8"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub 1.8","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1.8::el9"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub 1.9","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhdh:1.9::el9"]},{"vendor":"Red Hat","product":"Migration Toolkit for Applications 8","defaultStatus":"affected","cpes":["cpe:/a:redhat:migration_toolkit_applications:8"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift GitOps","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_gitops:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Virtualization 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:container_native_virtualization:4"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","defaultStatus":"affected","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","defaultStatus":"affected","cpes":["cpe:/a:redhat:ansible_portal:2"]}]

{"timestamp":"2026-02-19T20:58:40.378859Z","id":"CVE-2026-26278","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"NaturalIntelligence","product":"fast-xml-parser","versions":[{"version":">= 5.0.0, < 5.3.6","status":"affected"},{"version":">= 4.1.3, < 4.5.4","status":"affected"}]}]

OR
          *cpe:2.3:a:naturalintelligence:fast-xml-parser:*:*:*:*:*:*:*:* versions from (including) 4.1.3 up to (excluding) 5.3.6

GitHub, Inc.: https://github.com/NaturalIntelligence/fast-xml-parser/commit/910dae5be2de2955e968558fadf6e8f74f117a77 Types: Patch

GitHub, Inc.: https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.6 Types: Product, Release Notes

GitHub, Inc.: https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-jmr7-xgp7-cmfj Types: Exploit, Vendor Advisory

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. In versions 4.1.3 through 5.3.5, the XML parser can be forced to do an unlimited amount of entity expansion. With a very small XML input, it’s possible to make the parser spend seconds or even minutes processing a single request, effectively freezing the application. Version 5.3.6 fixes the issue. As a workaround, avoid using DOCTYPE parsing by `processEntities: false` option.

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-776

https://github.com/NaturalIntelligence/fast-xml-parser/commit/910dae5be2de2955e968558fadf6e8f74f117a77

https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.3.6

https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-jmr7-xgp7-cmfj