Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N H N N N N L N 2.9 .0042 34.0 —
AFFECTED Product Versions Fixed jsch 2.28.0 – 2.28.6
TIMELINE Sep 6 Reserved by VulDB Sep 6 Published (CNA: VulDB) Sep 11 EXPLOIT PUBLISHED — CVE-2026-86231 (mwiede jsch). Public exploit reference added.
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.
| Date | Event | Detail |
|---|---|---|
| September 6, 2026 | Reserved | Reserved by VulDB |
| September 6, 2026 | Published | Published (CNA: VulDB) |
| September 11, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-86231 (mwiede jsch). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| mwiede | jsch | — | 2.28.0 | 2.28.6 |
Authoritative record: CVE-2026-86231 at cve.org
Vendors: mwiede
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-86231 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
