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HIGH severity

CVE-2019-1003044 — slack

HIGHFix: jenkinsci/slack-plugin@0268bbe

CVE-2019-1003044 is a high-severity (CVSS 7.1) Cross-Site Request Forgery (CSRF) vulnerability in org.jenkins-ci.plugins:slack. A fix is available for org.jenkins-ci.plugins:slack — see the affected versions and patch details below.

Jenkins Slack Notification Plugin CSRF vulnerability and missing permission checks

Also known asGHSA-5r8q-9fwv-2gpr
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs66th percentile — riskier than 66% of all scored CVEsHighest risk
0.00%0.54%1.09%1.63%0.3%1.1%May 26Sep 26Nov 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
☕org.jenkins-ci.plugins:slack

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

A cross-site request forgery vulnerability in Jenkins Slack Notification Plugin 2.19 and earlier allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:slackall versions2.20org.jenkins-ci.plugins:slack:2.20

Affected Products

1 product · 1 configurations
Application
slack notificationjenkins
≤ 2.19
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update org.jenkins-ci.plugins:slack to 2.20 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-1003044 is resolved across your whole dependency graph.

  3. Workarounds

    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

A cross-site request forgery vulnerability in Jenkins Slack Notification Plugin 2.19 and earlier allows attackers to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
O3 Security · Impact-Aware SCA

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CVE-2019-1003044: slack CSRF — Fixed in 2.20