CVE-2026-86231: fallo de gravedad media en mwiede jsch
mwiede jsch KnownHosts.java getRevokedKeys improper check for certificate revocation
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
33Vexday Risk Score
Sin señal de explotación. Ella tiene prueba de concepto pública.
ssvc Attendcvss 6.3epss 0.4%
A security flaw has been discovered in mwiede jsch up to 2.28.5. Affected is the function getRevokedKeys of the file src/main/java/com/jcraft/jsch/KnownHosts.java. Performing a manipulation of the argument known_hosts results in improper check for certificate revocation. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is told to be difficult. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.28.6 is able to address this issue. The patch is named 194a2f76a5c0f1c3f778565be3fd66bcafc42d23. You should upgrade the affected component.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Productos afectados
mwiede · jschPoCs públicas encontradas — 1
cve_referencegithub.com/mwiede/jsch/issues/1091no verificado⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
Referencias
https://github.com/mwiede/jsch/https://github.com/mwiede/jsch/commit/194a2f76a5c0f1c3f778565be3fd66bcafc42d23https://github.com/mwiede/jsch/issues/1091https://github.com/mwiede/jsch/pull/1098https://github.com/mwiede/jsch/releases/tag/jsch-2.28.6https://vuldb.com/cve/CVE-2026-86231https://vuldb.com/submit/898485https://vuldb.com/vuln/399388https://vuldb.com/vuln/399388/cti