{"cve":"CVE-2026-49835","nvd":{"published":"2026-07-17T19:17:16.227","modified":"2026-10-24T20:10:00.137","status":"Analyzed","description":"Sigstore Timestamp Authority is a service for issuing RFC 3161 timestamps. Prior to 2.1.0, the global wrapMetrics middleware records raw HTTP request path r.URL.Path and raw HTTP request method r.Method as Prometheus labels for latency and request count metric vectors before routing, allowing an unauthenticated remote attacker to issue requests with random paths such as /api/v1/timestamp/<uuid> or random HTTP methods and create unbounded permanent time-series entries that exhaust memory. This issue is fixed in version 2.1.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://github.com/sigstore/timestamp-authority/commit/506ec57b6ac2ea1e4739322e47453469425b69b5","https://github.com/sigstore/timestamp-authority/releases/tag/v2.1.0","https://github.com/sigstore/timestamp-authority/security/advisories/GHSA-9c54-x2g4-v92j"],"products":["linuxfoundation:sigstore_timestamp_authority"],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-49835","score":0.00744,"percentile":0.54464,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-9c54-x2g4-v92j","url":"https://osv.dev/vulnerability/GHSA-9c54-x2g4-v92j","summary":"Sigstore Timestamp Authority has OOM due to unbounded metric label cardinality","modified":"2026-09-10T03:50:49.238907973Z","packages":[{"ecosystem":"Go","name":"github.com/sigstore/timestamp-authority/v2","purl":"pkg:golang/github.com/sigstore/timestamp-authority/v2","ranges":["<2.1.0"],"fixed":["2.1.0"]},{"ecosystem":"Go","name":"github.com/sigstore/timestamp-authority","purl":"pkg:golang/github.com/sigstore/timestamp-authority","ranges":["<=1.2.9"],"fixed":[]}]},{"id":"GO-2026-5851","url":"https://osv.dev/vulnerability/GO-2026-5851","summary":"Sigstore Timestamp Authority has OOM due to unbounded metric label cardinality in github.com/sigstore/timestamp-authority","modified":"2026-07-08T15:29:24.085126301Z","packages":[{"ecosystem":"Go","name":"github.com/sigstore/timestamp-authority","purl":"pkg:golang/github.com/sigstore/timestamp-authority","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/sigstore/timestamp-authority/v2","purl":"pkg:golang/github.com/sigstore/timestamp-authority/v2","ranges":["<2.1.0"],"fixed":["2.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}