# Sigstore-Js vulnerabilities

Source: https://junglewise.ai/threats/technologies/sigstore-js  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/sigstore-js.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Sigstore-Js: 0 in the last 7 days and 1 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-118763, was published on 29 October 2026. 1 vulnerability in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 1
- Last 90 days: 1
- All time: 5 (1 critical, 0 exploited in the wild)

## About Sigstore-Js

JavaScript library for verifying Sigstore signatures on software artifacts using public key infrastructure.

## Latest Sigstore-Js vulnerabilities

- [CVE-2026-118763: sigstore-js credential leak in OCI registry blob upload](https://junglewise.ai/threats/cve-2026-118763-sigstore-js-provides-javascript-libraries-for-interacting-with) (high, CVSS 7.4, published 29 Oct 2026)
- [CVE-2026-48816: sigstore-js insufficient verification of data authenticity in @sigstore/verify](https://junglewise.ai/threats/cve-2026-48816-sigstore-js-insufficient-verification-of-data-authenticity-in) (medium, CVSS 6.5, published 14 Jul 2026)
- [CVE-2026-48815: sigstore-js improper verification of certificate OIDs](https://junglewise.ai/threats/cve-2026-48815-sigstore-js-improper-verification-of-certificate-oids) (high, CVSS 7.5, published 14 Jul 2026)
- [CVE-2026-48758: sigstore-js signature type-binding failure in @sigstore/core](https://junglewise.ai/threats/cve-2026-48758-sigstore-js-signature-type-binding-failure-in-sigstore-core) (medium, CVSS 5.4, published 14 Jul 2026)
- [CVE-2026-59891: Sigstore sigstore-js credential leakage via registry substring match](https://junglewise.ai/threats/cve-2026-59891-sigstore-sigstore-js-credential-leakage-via-registry-substring) (critical, CVSS 9.6, published 14 Jul 2026)

## Most severe Sigstore-Js vulnerabilities

- [CVE-2026-59891: Sigstore sigstore-js credential leakage via registry substring match](https://junglewise.ai/threats/cve-2026-59891-sigstore-sigstore-js-credential-leakage-via-registry-substring) (critical, CVSS 9.6, published 14 Jul 2026)
- [CVE-2026-48815: sigstore-js improper verification of certificate OIDs](https://junglewise.ai/threats/cve-2026-48815-sigstore-js-improper-verification-of-certificate-oids) (high, CVSS 7.5, published 14 Jul 2026)
- [CVE-2026-118763: sigstore-js credential leak in OCI registry blob upload](https://junglewise.ai/threats/cve-2026-118763-sigstore-js-provides-javascript-libraries-for-interacting-with) (high, CVSS 7.4, published 29 Oct 2026)
- [CVE-2026-48816: sigstore-js insufficient verification of data authenticity in @sigstore/verify](https://junglewise.ai/threats/cve-2026-48816-sigstore-js-insufficient-verification-of-data-authenticity-in) (medium, CVSS 6.5, published 14 Jul 2026)
- [CVE-2026-48758: sigstore-js signature type-binding failure in @sigstore/core](https://junglewise.ai/threats/cve-2026-48758-sigstore-js-signature-type-binding-failure-in-sigstore-core) (medium, CVSS 5.4, published 14 Jul 2026)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 1 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Sigstore-Js vulnerabilities", https://junglewise.ai/threats/technologies/sigstore-js, 9 November 2026.