साइनिंग के दौरान OIDC प्रमाणीकरण में sigstore CSRF संभावना

The impact of this CSRF vulnerability is considered low. An attacker would need to successfully execute a man-in-the-middle attack to exploit it. The attacker could craft a malicious request that, when triggered by a user, would cause sigstore-python to sign data using the attacker's identity instead of the user's. This could lead to unauthorized code signing or other actions performed with the user's credentials. While the technical feasibility exists, the reliance on a MITM attack limits the practical exploitability.

Developers and organizations using sigstore-python for code signing and verification are at risk. Specifically, those relying on OAuth authentication for sigstore-python and using versions prior to 4.2.0 are vulnerable. Shared hosting environments where multiple users share the same sigstore-python installation could also be affected.

• python / sigstore: Inspect OAuth authentication flows for unexpected requests or parameters.

# Example: Check for unusual state parameters in OAuth requests
import re
pattern = r'state=[a-zA-Z0-9_-]+'
# Analyze network traffic or application logs for this pattern

• python / sigstore: Monitor for unusual code signing activity or unexpected signatures.

# Example: Check for signatures from unknown or suspicious identities
import cryptography
# Analyze code signing certificates and signatures

1. 2026-01-26Disclosure

   disclosure

1. आरक्षित2026-01-22
2. प्रकाशित2026-01-26
3. संशोधित2026-02-03
4. EPSS अद्यतन2026-03-23

The primary mitigation for CVE-2026-24408 is to upgrade to sigstore-python version 4.2.0 or later, which contains the fix. If upgrading is not immediately possible, consider implementing additional security measures. User awareness training is crucial to educate users about the risks of phishing and malicious websites. Restricting OAuth flows to trusted origins can also help mitigate the risk. While not a direct fix, implementing strong authentication practices and regularly reviewing OAuth application permissions can reduce the attack surface.