{"cve":"CVE-2026-48791","nvd":{"published":"2026-08-13T00:17:32.407","modified":"2026-10-23T19:10:00.167","status":"Deferred","description":"sigstore-java is a sigstore java client for interacting with sigstore infrastructure. Version 2.0.0 erroneously removed verification of the integrated (Rekor entry) time) against the Fulcio certificate. Version 2.1.0 re-added this verification with enhancements that adhere to the Sigstore verification spec. The old sigstore-conformance test for this check was built incorrectly. This vulnerability impacts only users verifying bundles with `dev.sigstore:sigstore-java:2.0.0`. Older versions are not affected; it is fixed in `dev.sigstore:sigstore-java:2.1.0` A malicious actor may exploit this if they were able to access a users system and exfiltrate the temporary private key used during signing and then reuse an old fulcio certificate later without requiring direct access to the user's credentials. Users may protect themselves by re-verifying their artifacts using the newest sigstore-java or another current sigstore client. Transparency logs may also be audited for unauthorized signatures for a suspected reused identity.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N","score":2.0},"cwes":["CWE-347"],"references":["https://github.com/sigstore/sigstore-java/commit/4b7a49ebb1813f5b1ff113bcad63246358222d61","https://github.com/sigstore/sigstore-java/commit/b529335728fc5cfb574161b4b3c06859a8a2aa88","https://github.com/sigstore/sigstore-java/pull/1008","https://github.com/sigstore/sigstore-java/pull/1185","https://github.com/sigstore/sigstore-java/security/advisories/GHSA-qqw8-7c2r-jxch"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-48791","score":0.00071,"percentile":0.00042,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-qqw8-7c2r-jxch","url":"https://osv.dev/vulnerability/GHSA-qqw8-7c2r-jxch","summary":"Sigstore Java has a vulnerability with bundle verification of integratedTime","modified":"2026-06-30T18:26:42.215539Z","packages":[{"ecosystem":"Maven","name":"dev.sigstore:sigstore-java","purl":"pkg:maven/dev.sigstore/sigstore-java","ranges":[">=2.0.0 <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."]}