CVE-2026-24408: sigstore has CSRF possibility in OIDC authentication during signing
sigstore · sigstore-python
Affected: sigstore-python · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 7% of scored CVEs
Not scored yet. The CVE record carries no CVSS score.
DescriptionCVE.org
sigstore-python is a Python tool for generating and verifying Sigstore signatures. Prior to version 4.2.0, the sigstore-python OAuth authentication flow is susceptible to Cross-Site Request Forgery. `_OAuthSession` creates a unique "state" and sends it as a parameter in the authentication request but the "state" in the server response seems not not be cross-checked with this value. Version 4.2.0 contains a patch for the issue.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- sigstore · sigstore-python< 4.2.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Cross-Site Request Forgery
- Vendor
- sigstore
- Published
- January 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-24408 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.