CVE-2026-86231: mwiede jsch

mwiede jsch KnownHosts.java getRevokedKeys improper check for certificate revocation

CVSS 6.3 MediumEPSS 0.0042 · 36th percentile

Published by the CVE Program (CNA: VulDB) at 6 Sept 2026, 22:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
mwiede	jsch	affected 2.28.0 affected 2.28.1 affected 2.28.2 affected 2.28.3 affected 2.28.4 affected 2.28.5 unaffected 2.28.6

Identifiers

CVE-2026-86231

CNA

VulDB

Weakness (CWE)

CWE-298 · CWE-299

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.3	Medium	4.0	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	CNA (VulDB)Used for this record
3.7	Low	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C	CNA (VulDB)
3.7	Low	3.0	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C	CNA (VulDB)
2.6	Low	2.0	AV:N/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0042, the 36th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 6 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/399388 vdb-entrytechnical-description
vuldb.com/vuln/399388/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-86231 third-party-advisory
vuldb.com/submit/898485 third-party-advisory
github.com/mwiede/jsch/pull/1098 issue-trackingpatch
github.com/mwiede/jsch/commit/194a2f76a5c0f1c3f778565be3fd66bcafc42d23 patch
github.com/mwiede/jsch/releases/tag/jsch-2.28.6 patch
github.com/mwiede/jsch/ product
github.com/mwiede/jsch/issues/1091 exploitissue-tracking

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.