CVE-2026-31830— sigstore-ruby verifier returns success for DSSE bundles with mismatched in-toto subject digest
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-31830
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
sigstore-ruby verifier returns success for DSSE bundles with mismatched in-toto subject digest
Source: NVD (National Vulnerability Database)
Vulnerability Description
sigstore-ruby is a pure Ruby implementation of the sigstore verify command from the sigstore/cosign project. Prior to 0.2.3, Sigstore::Verifier#verify does not propagate the VerificationFailure returned by verify_in_toto when the artifact digest does not match the digest in the in-toto attestation subject. As a result, verification of DSSE bundles containing in-toto statements returns VerificationSuccess regardless of whether the artifact matches the attested subject. This vulnerability is fixed in 0.2.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加检查的返回值
Source: NVD (National Vulnerability Database)
Vulnerability Title
Sigstore 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sigstore是sigstore开源的一个软件签名验证库。 Sigstore 0.2.3之前版本存在安全漏洞，该漏洞源于验证过程中未正确传播验证失败信息，可能导致验证绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| sigstore | sigstore-ruby | < 0.2.3 | - |
II. Public POCs for CVE-2026-31830
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-31830
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same vendor: sigstore
- CVE-2026-39984
Sigstore Timestamp Authority has Improper Certificate Valida - CVE-2026-39395
Cosign's verify-blob-attestation reports false positive when - CVE-2026-24122
Cosign Certificate Chain Expiry Validation Issue Allows Issu - CVE-2026-24408
sigstore has CSRF possibility in OIDC authentication during - CVE-2026-24137
sigstore legacy TUF client allows for arbitrary file writes
Same weakness: CWE-252
- CVE-2026-34065
nimiq-primitives: Node crash due to missing interlink valida - CVE-2026-35344
uutils coreutils dd Silent Data Corruption via Unconditional - CVE-2026-35468
nimiq/core-rs-albatross: Panic in history index request hand - CVE-2026-28691
ImageMagick has an uninitialized pointer dereference in JBIG - CVE-2026-0723
Unchecked Return Value in GitLab
V. Comments for CVE-2026-31830
No comments yet