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Vulnerability Detail

CVE-2026-42784 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
High
Score / CVSS
7.4
Creation Date
15h ago
Vendor
Red Hat
Product
Confidential Compute Attestation
Attack Type
Improper Verification of Cryptographic Signature
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Attack Complexity
LOW

Narrative and Response

Description

A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an attacker can illegitimately bind an arbitrary subkey to their own certificate and forge signatures, completely compromising cryptographic integrity.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "7.4",
  "pubDate": "2026-09-16T17:17:18.380Z",
  "pubdate": "2026-09-16T17:17:18.380Z"
}
CVE-2026-42784: CVE-2026-42784 Vulnerability (HIGH Severity, CVSS: 7.4) | Sceawere