Veille CVE

Vendredi 22 mai 2026

6 CVE

Critique 3 Élevée 1 Moyenne 2 Faible 0 Non évaluée 0 Exploitées (KEV) Tri : plus récentes « Red Hat OpenShift API for Data Protection 1.4 » ✕
  1. CVE-2026-46595 10.0 Critique

    golang.org/x/crypto/ssh · Red Hat Cryostat 4 on RHEL 9 · Red Hat RHEM 1.0 for RHEL 9 · Red Hat RHEM 1.1 for RHEL 10

    Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

  2. CVE-2026-42508 9.1 Critique

    golang.org/x/crypto/ssh/knownhosts · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

    Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.

  3. CVE-2026-39835 5.3 Moyenne

    golang.org/x/crypto/ssh · Red Hat Cryostat 4 on RHEL 9 · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 8

    SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

  4. CVE-2026-39830 9.1 Critique

    golang.org/x/crypto/ssh · Red Hat Cryostat 4 on RHEL 9 · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 8

    A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

  5. CVE-2026-39829 7.5 Élevée

    golang.org/x/crypto/ssh · Red Hat Cryostat 4 on RHEL 9 · Red Hat Enterprise Linux 10 · Red Hat Enterprise Linux 8

    The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

  6. CVE-2026-39828 6.3 Moyenne

    golang.org/x/crypto/ssh · Red Hat Cryostat 4 on RHEL 9 · Red Hat RHEM 1.0 for RHEL 9 · Red Hat RHEM 1.1 for RHEL 10

    When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.