How severe is CVE-2018-1000426?

CVE-2018-1000426 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-1000426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000426?

CVE-2018-1000426 affects Jenkins Git Changelog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000426?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1000426 published?

CVE-2018-1000426 was published on 2019-01-09 and last updated on 2026-06-17.

CVE-2018-1000426

CVE-2018-1000426 is a medium-severity vulnerability in Jenkins Git Changelog with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Jenkins Git Changelog
Published: 2019-01-09
Last modified: 2026-06-17

Description

A cross-site scripting vulnerability exists in Jenkins Git Changelog Plugin 2.6 and earlier in GitChangelogSummaryDecorator/summary.jelly, GitChangelogLeftsideBuildDecorator/badge.jelly, GitLogJiraFilterPostPublisher/config.jelly, GitLogBasicChangelogPostPublisher/config.jelly that allows attackers able to control the Git history parsed by the plugin to have Jenkins render arbitrary HTML on some pages.

Frequently asked questions

What is CVE-2018-1000426?: A cross-site scripting vulnerability exists in Jenkins Git Changelog Plugin 2.6 and earlier in GitChangelogSummaryDecorator/summary.jelly, GitChangelogLeftsideBuildDecorator/badge.jelly, GitLogJiraFilterPostPublisher/config.jelly, GitLogBasicChangelogPostPublisher/config.jelly that allows attackers able to control the Git history parsed by the plugin to have Jenkins render arbitrary HTML on some pages.
How severe is CVE-2018-1000426?: CVE-2018-1000426 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-1000426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000426?: CVE-2018-1000426 affects Jenkins Git Changelog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000426?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000426 published?: CVE-2018-1000426 was published on 2019-01-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:git_changelog:*:*:*:*:*:jenkins:*:*

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