CVE-2026-42784
CVE CVE-2026-42784EUVD EUVD-2026-80888Published 2026-09-16T16:56:11.000ZLast changed 2026-09-23T09:01:33.000ZCVSS 7.4
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Red Hat — Confidential Compute Attestation
- Red Hat — Red Hat Ansible Automation Platform 2
- Red Hat — Red Hat Enterprise Linux 10
- Red Hat — Red Hat Enterprise Linux 9
- Red Hat — Red Hat Hardened Images patch: 0.3.2-4.hum1
- Red Hat — Red Hat OpenShift Container Platform 4
- Red Hat — Red Hat Satellite 6
- Red Hat — Red Hat Trusted Profile Analyzer
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Red Hat — Red Hat Ansible Automation Platform
- Red Hat — Red Hat Enterprise Linux
- Red Hat — Red Hat OpenShift Container Platform
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.