VulnSocial

CVE-2026-39395False Positive(sigstore / cosign)

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified OK" result for attestations with malformed payloads or mismatched predicate types. For old-format bundles and detached signatures, this was due to a logic flaw in the error handling of the predicate type validation. For new-format bundles, the predicate type validation was bypassed completely. This vulnerability is fixed in 3.0.6 and 2.6.3.

sigstore CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-754

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • cosign

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • False Positive: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
sigstore
Products
cosign

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-04-08: 104-08
Signal classification1 categories
False Positive
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    False Positive

    CVE-2026-39395 Cosign provides code signing and transparency for containers and binaries. Prior to 3.0.6 and 2.6.3, cosign verify-blob-attestation may erroneously report a "Verified… https://www.cve.org/CVERecord?id=CVE-2026-39395

    Post summary

    The notice indicates that cosign verify-blob-attestation might incorrectly report a result for CVE-2026-39395, suggesting the vulnerability may be a false positive, with no patch or technical details provided.

    00000163
    57.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appsigstorecosign---

Explore more

Back to dashboardsigstore CVEscosign vulnerabilities