CVE-2025-30196: Jenkins AnchorChain Plugin 1.0 does not limit URL schemes for links it creates based on workspace content, all

Routine

MEDIUM 6.5DOWNGRADE

CVE-2025-30196 is a medium-severity flaw (CVSS 6.5) affecting anchorchain. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Jenkins AnchorChain Plugin 1.0 does not limit URL schemes for links it creates based on workspace content, allowing the `javascript:` scheme, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to control the input file for the Anchor Chain post-build step.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-03-19
Last modified	2026-06-17

Publisher (CNA): Jenkins Project · Vendor: jenkins

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-03-19 16:15 UTCPublished CVE record published
2026-06-17 09:08 UTCUpdated Record last modified

jenkins anchorchain DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy anchorchain || rpm -q anchorchain || anchorchain --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison anchorchain sudo apt install anchorchain=<VERSION_BEFORE_1.0> sudo apt-mark hold anchorchain

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list anchorchain sudo dnf downgrade anchorchain-<VERSION_BEFORE_1.0> sudo dnf versionlock add anchorchain

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-30196?

anchorchain: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-30196 being exploited?

CVE-2025-30196 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-30196 affect?

CVE-2025-30196 affects anchorchain. Severity is medium (CVSS 6.5). Jenkins AnchorChain Plugin 1.0 does not limit URL schemes for links it creates based on workspace content, allowing the `javascript:` scheme, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to co

How urgent is CVE-2025-30196?

Priority 29/100. No elevated risk signals yet.

Software pages

Jenkins vulnerabilities

References

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