CVE-2026-49838

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{"bugzilla": {"description": "github.com/osrg/gobgp: GoBGP: Denial of Service via malformed BGP UPDATE message", "id": "2531686", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531686"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in GoBGP, an open-source Border Gateway Protocol (BGP) implementation. A configured confederation eBGP peer can send a specially crafted BGP UPDATE message with a zero-length AS_PATH attribute. This malformed message is improperly handled during validation, leading to an unchecked memory access that causes the GoBGP process to crash. This vulnerability results in a denial of service for the affected system."], "name": "CVE-2026-49838", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift4/metallb-rhel8", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-10T21:57:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-49838\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-49838\nhttps://github.com/osrg/gobgp/commit/4a319a6c25630fb3cdbda3e9ccfe56e702bdaaa0\nhttps://github.com/osrg/gobgp/security/advisories/GHSA-frrj-87jh-2772"], "threat_severity": "Moderate"}

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