CVE-2026-39832
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- CVE-2026-39832
CVE Details
| Release Date: | 2026-05-22 | |
| Impact: | Important | What is this? |
Description
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.
See more information about CVE-2026-39832 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 8.7 |
| Vector String: | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| Version: | 3.1 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | Required |
| Scope: | Changed |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (aardvark-dns) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (buildah) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (cockpit-podman) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (conmon) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (container-selinux) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (containernetworking-plugins) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (containers-common) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (criu) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (crun) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (fuse-overlayfs) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (libslirp) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (netavark) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (oci-seccomp-bpf-hook) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (podman) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (python-podman) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (runc) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (skopeo) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (slirp4netns) | ELSA-2026-35833 | 2026-07-07 |
| Oracle Linux version 8 (udica) | ELSA-2026-35833 | 2026-07-07 |
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