PT-2026-4830 · Unknown · Sigstore-Python

Jku · Published 2026-01-26 · Updated 2026-03-02 · CVE-2026-24408

Positive Technologies (AI Summary)

CVSS v3.1

5.0

Medium

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions sigstore-python versions prior to 4.2.0

Description sigstore-python is a Python tool used for generating and verifying Sigstore signatures. A flaw exists in the OAuth authentication flow, making it susceptible to Cross-Site Request Forgery. The OAuthSession creates a unique "state" parameter for authentication requests, but the server response does not cross-check this value, potentially allowing attackers to exploit the vulnerability.

Recommendations Update to version 4.2.0 or later.

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2026-24408

GHSA-HM8F-75XX-W2VR

OPENSUSE-SU-2026:10104-1

Affected Products

Sigstore-Python

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24408.json · Exploit
• https://github.com/sigstore/sigstore-python/commit/5e77497fe8f0b202bdd118949074ec2f20da69aa · Patch
• https://github.com/sigstore/sigstore-python/security/advisories/GHSA-hm8f-75xx-w2vr · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-24408 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:10104-1 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-hm8f-75xx-w2vr · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-24408 · Vendor Advisory
• https://github.com/sigstore/sigstore-python · Note
• https://github.com/sigstore/sigstore-python/releases/tag/v4.2.0 · Note
• https://t.me/CVEtracker/43024 · Telegram Post
• https://t.me/cveNotify/153831 · Telegram Post
• https://suse.com/security/cve/CVE-2026-24408 · Note
• https://twitter.com/VulmonFeeds/status/2015951610401173557 · Twitter Post
• https://twitter.com/CVEnew/status/2015919720235479396 · Twitter Post
• https://twitter.com/_cvereports/status/2015910278118899765 · Twitter Post