{"schema_version":1,"title":"Sigstore vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 13 vulnerabilities in Sigstore: 0 in the last 7 days and 9 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-54787, was published on 31 July 2026. 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/sigstore","json_url":"https://junglewise.ai/threats/vendors/sigstore.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/sigstore","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":3,"all_time":13,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":9,"last_365_days":13},"latest":[{"cve":"CVE-2026-54787","cvss":3.1,"epss":0.0013,"slug":"cve-2026-54787-sigstore-go-expired-key-usage-in-self-managed-signing-workflow","title":"sigstore-go expired key usage in self-managed signing workflow","severity":"low","exploited":false,"published_at":"2026-07-31T23:17:25.287+00:00","url":"https://junglewise.ai/threats/cve-2026-54787-sigstore-go-expired-key-usage-in-self-managed-signing-workflow"},{"cve":"CVE-2026-49834","cvss":5.9,"epss":0.0018,"slug":"cve-2026-49834-sigstore-sigstore-go-multi-log-threshold-bypass","title":"Sigstore sigstore-go multi-log threshold bypass","severity":"medium","exploited":false,"published_at":"2026-07-17T20:17:21.963+00:00","url":"https://junglewise.ai/threats/cve-2026-49834-sigstore-sigstore-go-multi-log-threshold-bypass"},{"cve":"CVE-2026-49835","cvss":5.9,"epss":0.0074,"slug":"cve-2026-49835-sigstore-timestamp-authority-memory-exhaustion-in-wrapmetrics","title":"Sigstore Timestamp Authority memory exhaustion in wrapMetrics middleware","severity":"medium","exploited":false,"published_at":"2026-07-17T19:17:16.227+00:00","url":"https://junglewise.ai/threats/cve-2026-49835-sigstore-timestamp-authority-memory-exhaustion-in-wrapmetrics"},{"cve":"CVE-2026-48816","cvss":6.5,"epss":0.0016,"slug":"cve-2026-48816-sigstore-js-insufficient-verification-of-data-authenticity-in","title":"sigstore-js insufficient verification of data authenticity in @sigstore/verify","severity":"medium","exploited":false,"published_at":"2026-07-14T21:17:01.497+00:00","url":"https://junglewise.ai/threats/cve-2026-48816-sigstore-js-insufficient-verification-of-data-authenticity-in"},{"cve":"CVE-2026-48815","cvss":7.5,"epss":0.0019,"slug":"cve-2026-48815-sigstore-js-improper-verification-of-certificate-oids","title":"sigstore-js improper verification of certificate OIDs","severity":"high","exploited":false,"published_at":"2026-07-14T21:17:01.37+00:00","url":"https://junglewise.ai/threats/cve-2026-48815-sigstore-js-improper-verification-of-certificate-oids"},{"cve":"CVE-2026-48758","cvss":5.4,"epss":0.0026,"slug":"cve-2026-48758-sigstore-js-signature-type-binding-failure-in-sigstore-core","title":"sigstore-js signature type-binding failure in @sigstore/core","severity":"medium","exploited":false,"published_at":"2026-07-14T21:17:01.113+00:00","url":"https://junglewise.ai/threats/cve-2026-48758-sigstore-js-signature-type-binding-failure-in-sigstore-core"},{"cve":"CVE-2026-59891","cvss":9.6,"epss":0.0047,"slug":"cve-2026-59891-sigstore-sigstore-js-credential-leakage-via-registry-substring","title":"Sigstore sigstore-js credential leakage via registry substring match","severity":"critical","exploited":false,"published_at":"2026-07-14T17:17:15.27+00:00","url":"https://junglewise.ai/threats/cve-2026-59891-sigstore-sigstore-js-credential-leakage-via-registry-substring"},{"cve":"CVE-2026-49478","cvss":8.7,"epss":0.0028,"slug":"cve-2026-49478-sigstore-fulcio-ssrf-and-token-leakage-in-oidc-discovery","title":"Sigstore Fulcio SSRF and Token Leakage in OIDC Discovery","severity":"high","exploited":false,"published_at":"2026-06-30T18:38:45+00:00","url":"https://junglewise.ai/threats/cve-2026-49478-sigstore-fulcio-ssrf-and-token-leakage-in-oidc-discovery"},{"cve":"CVE-2026-48791","cvss":3.1,"epss":0.0007,"slug":"cve-2026-48791-sigstore-java-improper-signature-verification-in-keylessverifier","title":"Sigstore Java improper signature verification in KeylessVerifier","severity":"low","exploited":false,"published_at":"2026-06-30T18:10:28+00:00","url":"https://junglewise.ai/threats/cve-2026-48791-sigstore-java-improper-signature-verification-in-keylessverifier"},{"cve":"CVE-2026-48702","cvss":7.5,"epss":0.0046,"slug":"cve-2026-48702-sigstore-rekor-oom-via-unbounded-decompression-in-alpine-apk","title":"Sigstore Rekor OOM via unbounded decompression in Alpine APK parsing","severity":"high","exploited":false,"published_at":"2026-06-25T21:33:36+00:00","url":"https://junglewise.ai/threats/cve-2026-48702-sigstore-rekor-oom-via-unbounded-decompression-in-alpine-apk"},{"cve":"CVE-2026-44310","cvss":5.4,"epss":0.0017,"slug":"cve-2026-44310-sigstore-gitsign-signature-verification-bypass-via-empty","title":"Sigstore Gitsign signature verification bypass via empty certificate set","severity":"medium","exploited":false,"published_at":"2026-05-15T17:16:47.43+00:00","url":"https://junglewise.ai/threats/cve-2026-44310-sigstore-gitsign-signature-verification-bypass-via-empty"},{"cve":"CVE-2026-44309","cvss":5.3,"epss":0.0016,"slug":"cve-2026-44309-sigstore-gitsign-improper-signature-verification-via-go-git-re","title":"Sigstore Gitsign improper signature verification via go-git re-encoding","severity":"medium","exploited":false,"published_at":"2026-05-15T17:16:47.297+00:00","url":"https://junglewise.ai/threats/cve-2026-44309-sigstore-gitsign-improper-signature-verification-via-go-git-re"},{"cve":"CVE-2026-39395","cvss":4.3,"epss":0.0029,"slug":"cve-2026-39395-sigstore-cosign-validation-bypass-in-verify-blob-attestation","title":"Sigstore Cosign validation bypass in verify-blob-attestation","severity":"medium","exploited":false,"published_at":"2026-04-07T20:16:33.14+00:00","url":"https://junglewise.ai/threats/cve-2026-39395-sigstore-cosign-validation-bypass-in-verify-blob-attestation"}],"vendor":{"hub":true,"name":"Sigstore","slug":"sigstore","homepage":"https://sigstore.dev/","description":"An open-source project providing tools and services for secure software signing and verification.","url":"https://junglewise.ai/threats/vendors/sigstore"},"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":1,"exploited":0,"vulnerabilities":6},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-59891","cvss":9.6,"epss":0.0047,"slug":"cve-2026-59891-sigstore-sigstore-js-credential-leakage-via-registry-substring","title":"Sigstore sigstore-js credential leakage via registry substring match","severity":"critical","exploited":false,"published_at":"2026-07-14T17:17:15.27+00:00","url":"https://junglewise.ai/threats/cve-2026-59891-sigstore-sigstore-js-credential-leakage-via-registry-substring"},{"cve":"CVE-2026-49478","cvss":8.7,"epss":0.0028,"slug":"cve-2026-49478-sigstore-fulcio-ssrf-and-token-leakage-in-oidc-discovery","title":"Sigstore Fulcio SSRF and Token Leakage in OIDC Discovery","severity":"high","exploited":false,"published_at":"2026-06-30T18:38:45+00:00","url":"https://junglewise.ai/threats/cve-2026-49478-sigstore-fulcio-ssrf-and-token-leakage-in-oidc-discovery"},{"cve":"CVE-2026-48702","cvss":7.5,"epss":0.0046,"slug":"cve-2026-48702-sigstore-rekor-oom-via-unbounded-decompression-in-alpine-apk","title":"Sigstore Rekor OOM via unbounded decompression in Alpine APK parsing","severity":"high","exploited":false,"published_at":"2026-06-25T21:33:36+00:00","url":"https://junglewise.ai/threats/cve-2026-48702-sigstore-rekor-oom-via-unbounded-decompression-in-alpine-apk"},{"cve":"CVE-2026-48815","cvss":7.5,"epss":0.0019,"slug":"cve-2026-48815-sigstore-js-improper-verification-of-certificate-oids","title":"sigstore-js improper verification of certificate OIDs","severity":"high","exploited":false,"published_at":"2026-07-14T21:17:01.37+00:00","url":"https://junglewise.ai/threats/cve-2026-48815-sigstore-js-improper-verification-of-certificate-oids"},{"cve":"CVE-2026-48816","cvss":6.5,"epss":0.0016,"slug":"cve-2026-48816-sigstore-js-insufficient-verification-of-data-authenticity-in","title":"sigstore-js insufficient verification of data authenticity in @sigstore/verify","severity":"medium","exploited":false,"published_at":"2026-07-14T21:17:01.497+00:00","url":"https://junglewise.ai/threats/cve-2026-48816-sigstore-js-insufficient-verification-of-data-authenticity-in"},{"cve":"CVE-2026-49835","cvss":5.9,"epss":0.0074,"slug":"cve-2026-49835-sigstore-timestamp-authority-memory-exhaustion-in-wrapmetrics","title":"Sigstore Timestamp Authority memory exhaustion in wrapMetrics middleware","severity":"medium","exploited":false,"published_at":"2026-07-17T19:17:16.227+00:00","url":"https://junglewise.ai/threats/cve-2026-49835-sigstore-timestamp-authority-memory-exhaustion-in-wrapmetrics"},{"cve":"CVE-2026-49834","cvss":5.9,"epss":0.0018,"slug":"cve-2026-49834-sigstore-sigstore-go-multi-log-threshold-bypass","title":"Sigstore sigstore-go multi-log threshold bypass","severity":"medium","exploited":false,"published_at":"2026-07-17T20:17:21.963+00:00","url":"https://junglewise.ai/threats/cve-2026-49834-sigstore-sigstore-go-multi-log-threshold-bypass"},{"cve":"CVE-2026-48758","cvss":5.4,"epss":0.0026,"slug":"cve-2026-48758-sigstore-js-signature-type-binding-failure-in-sigstore-core","title":"sigstore-js signature type-binding failure in @sigstore/core","severity":"medium","exploited":false,"published_at":"2026-07-14T21:17:01.113+00:00","url":"https://junglewise.ai/threats/cve-2026-48758-sigstore-js-signature-type-binding-failure-in-sigstore-core"},{"cve":"CVE-2026-44310","cvss":5.4,"epss":0.0017,"slug":"cve-2026-44310-sigstore-gitsign-signature-verification-bypass-via-empty","title":"Sigstore Gitsign signature verification bypass via empty certificate set","severity":"medium","exploited":false,"published_at":"2026-05-15T17:16:47.43+00:00","url":"https://junglewise.ai/threats/cve-2026-44310-sigstore-gitsign-signature-verification-bypass-via-empty"},{"cve":"CVE-2026-44309","cvss":5.3,"epss":0.0016,"slug":"cve-2026-44309-sigstore-gitsign-improper-signature-verification-via-go-git-re","title":"Sigstore Gitsign improper signature verification via go-git re-encoding","severity":"medium","exploited":false,"published_at":"2026-05-15T17:16:47.297+00:00","url":"https://junglewise.ai/threats/cve-2026-44309-sigstore-gitsign-improper-signature-verification-via-go-git-re"}],"generated_at":"2026-09-28T03:07:00.154823+00:00","technologies":[{"name":"Sigstore-Js","slug":"sigstore-js","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/sigstore-js"}]}