CVE-2026-42784: Sequoia-openpgp: cryptographic integrity compromise via key flag confusion
Red Hat · Red Hat Ansible Automation Platform 2.6 for RHEL 9
Vendor fix available · Affected: Red Hat Ansible Automation Platform 2.6 for RHEL 9 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 28% of scored CVEs
DescriptionCVE.org
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.
Affected products20
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat Ansible Automation Platform 2.6 for RHEL 9Versions not stated
- Red Hat · Red Hat Enterprise Linux 10Versions not stated
- Red Hat · Red Hat Enterprise Linux 10Versions not stated
- Red Hat · Red Hat Enterprise Linux 10Versions not stated
- Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 9Versions not stated
- Red Hat · Red Hat Satellite 6.16 for RHEL 8Versions not stated
- Red Hat · Red Hat Satellite 6.16 for RHEL 8Versions not stated
- Red Hat · Red Hat Satellite 6.16 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.16 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.17 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.17 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.18 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.18 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.19 for RHEL 9Versions not stated
- Red Hat · Red Hat Satellite 6.19 for RHEL 9Versions not stated
- Red Hat · Red Hat Cost Management On-Premise 1Versions not stated
- Red Hat · Red Hat Hardened ImagesVersions not stated
- Red Hat · Red Hat Hardened ImagesVersions not stated
- Red Hat · Confidential Compute AttestationVersions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-42784 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-347cwe.mitre.org
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
4 more references are in the CVE record.