CVE-2023-40343

mediumpriority · track · 24EPSS 0.006 · 48 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.59% (48th) EPSS

CVSS 5.9 · medium

Is it mine?

5 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Jenkins Tuleap Authentication Plugin 1.1.20 and earlier uses a non-constant time comparison function when validating an authentication token allowing attackers to use statistical methods to obtain a valid authentication token.

cvss

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

5.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–5.9

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 3.6

v3.13.7lowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · OSV

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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-203USprimaryCWE-203US

affected products (5)

Products and version ranges known to be affected.

Jenkins Jenkins Pluginsall versionscert_bundDEcpe:/a:cloudbees:jenkins:plugins
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Jenkins Project Jenkins Tuleap Authentication Plugin≤ 0 ≤1.1.20enisa_euvdEU
jenkins tuleap authentication≤ 1.1.20nvdUScpe:2.3:a:jenkins:tuleap_authentication:*:*:*:*:*:*:*:*
Maven io.jenkins.plugins:tuleap-oauth< 1.1.21osvUSpkg:maven/io.jenkins.plugins/tuleap-oauth

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2088Jenkins: Mehrere SchwachstellenDeutsch2023-08-16csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Jenkins ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen oder Sicherheitsmaßnahmen zu umgehen.
GHSA-5r33-mgjf-6656Jenkins Tuleap Authentication Plugin non-constant time token comparison2023-08-16ghsa · osvUS
Jenkins Tuleap Authentication Plugin 1.1.20 and earlier does not use a constant-time comparison when checking whether two authentication tokens are equal. This could potentially allow attackers to use statistical methods to obtain a valid authentication token. Tuleap Authentication Plugin 1.1.21 uses a constant-time comparison when validating authentication tokens.

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 2023-08-16modified 2026-06-17

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+881 more

references (9)

External citations — patches, advisories, analysis.

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