CVE-2026-56624

highpriority · track · 0EPSS 0.003 · 21 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (21st) EPSS

CVSS 7.3 · high

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Improper certificate validation in Apache MINA SSHD (server-side). Apache MINA SSHD is a Java library for client-side and server-side SSH. Server-side OpenSSH user certificate validation during user authentication in an Apache MINA SSHD server did not check for the unsupported force-command or verify-required options that could be embedded in the certificate, nor did it validate these options. As a result it was possible that a user could authenticate with such a certificate that included a force-command option but still was able to execute other commands. What other command exactly would be available to the user depends on the implementation of the server. This issue is fixed in Apache MINA SSHD 2.19.0 and 3.0.0-M5. Applications are advised to upgrade to these versions. The fix rejects OpenSSH user certificates that include these options, since Apache MINA SSHD implements neither force-command nor sk-*-cert-v01@openssh.com user certificates (which are the only ones for which verify-required would make sense).

cvss

Technical severity, 0–10. One row per scoring source.

7.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.7–7.3

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · security@apache.orgexploitability 2.1 · impact 5.2

v3.16.7mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-295US

affected products (16)

Products and version ranges known to be affected.

Atlassian Bamboo≤ LTS <10.2.24cert_bundDE
Atlassian Bamboo≤ LTS <12.1.12cert_bundDE
Atlassian Bitbucket≤ LTS <10.2.8cert_bundDE
Atlassian Bitbucket≤ LTS <9.4.26cert_bundDE
Atlassian Bitbucket< 10.5.1cert_bundDE
Atlassian Confluence≤ LTS <10.2.19cert_bundDE
Atlassian Confluence≤ LTS <9.2.26cert_bundDE
Atlassian Confluence< 11.0.0cert_bundDE
Atlassian Crucible< 4.9.15cert_bundDE
Atlassian Fisheye< 4.9.15cert_bundDE
Atlassian Jira≤ LTS <10.3.26cert_bundDE
Atlassian Jira≤ LTS <11.3.12cert_bundDE
Apache Software Foundation Apache Mina SSHD≤ 3.0.0-M1 ≤3.0.0-M4enisa_euvdEU
Apache Software Foundation Apache Mina SSHD≤ 2.0.0 ≤2.18.0enisa_euvdEU
apache mina sshd2.0.0 → 2.19.0nvdUScpe:2.3:a:apache:mina_sshd:*:*:*:*:*:*:*:*
apache mina sshd= 3.0.0nvdUScpe:2.3:a:apache:mina_sshd:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2834Red Hat Build of Apache Camel for Quarkus (sshd-core, libthrift, org.hl7.fhir.utilities): Mehrere SchwachstellenDeutsch2026-08-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux und Apache Camel ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren und offenzulegen oder beliebigen Code auszuführen.
WID-SEC-W-2026-4056Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Atlassian Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira ausnutzen, um Daten zu manipulieren, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um einen Cross-Site Scripting Angriff durchzuführen, um Sicherheitsvorkehrungen zu umgehen und um beliebigen Programmcode auszuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-07-20modified 2026-10-24

references (5)

External citations — patches, advisories, analysis.

http://www.openwall.com/lists/oss-security/2026/07/20/17 cnnvd
https://lists.apache.org/thread/o4c2jml522j3z80gbryqzc2f1253ltp6 cnnvd
https://lists.apache.org/thread/o4c2jml522j3z80gbryqzc2f1253ltp6 enisa_euvd
http://www.openwall.com/lists/oss-security/2026/07/20/17Mailing ListThird Party Advisorynvd
https://lists.apache.org/thread/o4c2jml522j3z80gbryqzc2f1253ltp6Vendor AdvisoryMailing Listnvd

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