CVE-2026-42521

mediumpriority · track · 0EPSS 0.002 · 16 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.25% (16th) EPSS

CVSS 6.5 · medium

Is it mine?

6 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-28

Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in configuration when deserializing inheritance strategies, without restricting the classes that can be instantiated, allowing attackers with Item/Configure permission to instantiate arbitrary types, which may lead to information disclosure or other impacts depending on the classes available on the classpath.

cvss

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

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nsecondaryexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USCWE-502US

affected products (6)

Products and version ranges known to be affected.

Jenkins Jenkins Matrix Authorization Strategy Plugin <3.2.10all versionscert_bundDE
jenkins Jenkins≤ Matrix Authorization Strategy Plugin <3.2.10cert_bundDE
Jenkins Project Jenkins Matrix Authorization Strategy Plugin≤ 2.0-beta-1 ≤3.2.9enisa_euvdEU
jenkins matrix authorization strategy= 2.0nvdUScpe:2.3:a:jenkins:matrix_authorization_strategy:*:*:*:*:*:*:*:*
jenkins matrix authorization strategy2.1 → 3.2.10nvdUScpe:2.3:a:jenkins:matrix_authorization_strategy:*:*:*:*:*:*:*:*
Maven org.jenkins-ci.plugins:matrix-auth2.0-beta-1 → 3.2.10osvUSpkg:maven/org.jenkins-ci.plugins/matrix-auth

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1320Jenkins Plugins: Mehrere SchwachstellenDeutsch2026-04-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Jenkins ausnutzen, um beliebigen Code auszuführen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen sowie Cross-Site-Scripting- oder Phishing-Angriffe durchzuführen.
GHSA-jp9r-mmhw-vff3Jenkins Matrix Authorization Strategy Plugin: Unsafe deserialization allows invocation of parameterless constructors2026-04-29ghsa · osvUS
Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in configuration when deserializing inheritance strategies, without restricting the classes that can be instantiated. This can be abused by attackers with Item/Configure permission to instantiate arbitrary types, which may lead to information disclosure or other impacts depending on the classes available on the classpath. Matrix Authorization Strategy Plugin 3.2.10 verifies that the class being instantiated is an inheritance strategy implementation, preventing instantiation of arbitrary types.

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 osv NVD CVE.org MITRE

published 2026-04-29modified 2026-10-26

references (4)

External citations — patches, advisories, analysis.

scry

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