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MEDIUM severity

CVE-2025-64144 — byteguard-build-actions

MEDIUM

CVE-2025-64144 is a medium-severity (CVSS 4.3) CWE-311 vulnerability in io.jenkins.plugins:byteguard-build-actions. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Jenkins ByteGuard Build Actions Plugin stores API tokens unencrypted in job config.xml files

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-64144.

EPSS Exploitation Probability

via FIRST.org ↗
0.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs7th percentile — riskier than 7% of all scored CVEsHighest risk
0.00%0.22%0.45%0.67%0.0%0.2%May 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕io.jenkins.plugins:byteguard-build-actions

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Jenkins ByteGuard Build Actions Plugin 1.0 and earlier stores API tokens unencrypted in job config.xml files on the Jenkins controller as part of its configuration.

These tokens can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system.

Additionally, the job configuration form does not mask these credentials, increasing the potential for attackers to observe and capture them.

As of publication of this advisory, there is no fix.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavenio.jenkins.plugins:byteguard-build-actionsall versionsNo fix

Affected Products

1 product · 1 configurations
Application
byteguard build actionsjenkins
1 version
1.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for io.jenkins.plugins:byteguard-build-actions, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of io.jenkins.plugins:byteguard-build-actions for CVE-2025-64144. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Jenkins ByteGuard Build Actions Plugin 1.0 and earlier stores API tokens unencrypted in job `config.xml` files on the Jenkins controller as part of its configuration. These tokens can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system. Additionally, the job configuration form does not mask these credentials, increasing the potential for attackers to observe and capture them. As of publication of this advisory, there is no fix.
O3 Security · Impact-Aware SCA

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CVE-2025-64144: byteguard-build-actions (Medium 4.3)