What is CVE-2022-35929?

CVE-2022-35929 is a high-severity vulnerability in Sigstore Cosign, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.1/10. Published 2022-08-04.

How severe is CVE-2022-35929?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Sigstore Cosign

CVE-2022-35929

cosign is a container signing and verification utility. In versions prior to 1.10.1 cosign can report a false positive if any attestation exists. `cosign verify-attestation` used with the `--type` flag will report a false positive verification when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to "custom"). This can happen when signing with a standard keypair and with "keyless" signing with Fulcio. This vulnerability can be reproduced with the `distroless.dev/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2` image. This image has a `vuln` attestation but not an `spdx` attestation. However, if you run `cosign verify-attestation --type=spdx` on this image, it incorrectly succeeds. This issue has been addressed in version 1.10.1 of cosign. Users are advised to upgrade. There are no known workarounds for this issue.

Published 2022-08-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000

Affected products

Sigstore Cosign — versions < 1.10.1

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

github.com/sigstore/cosign/security/advisories/GHSA-vjxv-45g9-9296 (Exploit, Third Party Advisory)
github.com/sigstore/cosign/commit/c5fda01a8ff33ca981f45a9f13e7fb6bd2080b94 (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-35929?: CVE-2022-35929 is a high-severity vulnerability in Sigstore Cosign, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.1/10. Published 2022-08-04.
How severe is CVE-2022-35929?: High severity. CVSS v3 base score is 7.1 out of 10.