7.5

CVE-2026-48815: sigstore sigstore-js

CVSS: 7.5v3.1HighDeferred
AliasesCGA-35gg-mc75-c7x2CGA-88pm-rchm-p5phGHSA-52v5-jr5w-gjxr
Published 14-07-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-48815 is a high (CVSS 7.5) vulnerability in sigstore sigstore-js. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-52QC-CR59-FVF7

Timeline

  1. 14-07-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

Description

sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 4.1.1, the documented certificateOIDs option in sigstore.verify() is accepted by the public API but discarded before verification, so required certificate extension OIDs are never checked and applications relying on certificateOIDs to restrict which certificates may sign artifacts can accept unauthorized certificates. This issue is fixed in version 4.1.1.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard2 products
  • graalvm-25-ce-nodejs< 25.0.3-r9
  • pulumi-language-nodejs< 3.248.0-r2
Npm1 product
  • sigstore< 4.1.1
Sigstore1 product
Wolfi1 product
  • pulumi-language-nodejs< 3.248.0-r2

4 vendors · 5 products

References

7 links