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{"bugzilla": {"description": "timestamp-authority: Sigstore Timestamp Authority: Denial of Service via unbounded metric label cardinality", "id": "2499691", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499691"}, "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-770", "details": ["A flaw was found in Sigstore Timestamp Authority. An unauthenticated remote attacker can exploit this vulnerability by sending requests with arbitrary HTTP paths and methods. This leads to the creation of an excessive number of unique metric labels, causing unbounded memory growth and a denial of service (DoS) condition on the server. This issue is a type of Improper Restriction of Resource Consumption (CWE-770)."], "mitigation": {"lang": "en:us", "value": "Upgrade to timestamp-authority v2.0.7/v2.1.0 or later. As a workaround, block invalid methods and unknown paths at a reverse proxy."}, "name": "CVE-2026-49835", "package_state": [{"cpe": "cpe:/a:redhat:trusted_artifact_signer:1", "fix_state": "Not affected", "package_name": "timestamp-authority", "product_name": "Red Hat Trusted Artifact Signer"}], "public_date": "2026-06-30T18:40:39Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-49835\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-49835\nhttps://github.com/sigstore/timestamp-authority/security/advisories/GHSA-9c54-x2g4-v92j"], "statement": "A flaw was found in the Sigstore Timestamp Authority. The wrapMetrics middleware records raw HTTP request paths and methods as Prometheus labels, allowing unbounded memory growth via requests with random paths. Red Hat Trusted Artifact Signer ships a fixed version and is not affected.", "threat_severity": "Moderate"}

{}