CVE-2026-42784Sequoia-openpgp: sequoia-openpgp: cryptographic integrity compromise via key flag confusion
Updated under an hour ago ()
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It affects Red Hat Ansible Automation Platform 2.6 for RHEL 9 and 8 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
- Weakness (CWE)
- CWE-347
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9 redhat:ansible_automation_platform | from 0:0.1.34-1.el9ap not affected | CNA record |
Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9 redhat:ansible_automation_platform_developer | from 0:0.1.34-1.el9ap not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:1.10.2.1-1.el10_2 not affected | CNA record |
Red Hat Red Hat Cost Management On-Premise 1 redhat:cost_management_on_premise | from 1791460851 not affected | CNA record |
Red Hat Red Hat Hardened Images redhat:hummingbird | from 0.3.2-4.hum1 not affected | CNA record |
Red Hat Confidential Compute Attestation redhat:confidential_compute_attestation | 1 | CNA record |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CNA record |
Red Hat Red Hat Satellite 6 redhat:satellite | 6 | CNA record |
Red Hat Red Hat Trusted Profile Analyzer redhat:trusted_profile_analyzer | 2 | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:34160vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:42078vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:42902vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76733vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76734vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76735vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:76737vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:79357vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-42784vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2464122issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.