How severe is CVE-2019-10309?

CVE-2019-10309 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2019-10309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-10309?

CVE-2019-10309 affects Jenkins Self-organizing Swarm Modules. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-10309?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-10309 published?

CVE-2019-10309 was published on 2019-04-30 and last updated on 2026-06-17.

CVE-2019-10309

CVE-2019-10309 is a critical-severity vulnerability in Jenkins Self-organizing Swarm Modules with a CVSS 3.x base score of 9.3. 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-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
CVSS v2: 4.8
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Jenkins Self-organizing Swarm Modules
Published: 2019-04-30
Last modified: 2026-06-17

Description

Jenkins Self-Organizing Swarm Plug-in Modules Plugin clients that use UDP broadcasts to discover Jenkins masters do not prevent XML External Entity processing when processing the responses, allowing unauthorized attackers on the same network to read arbitrary files from Swarm clients.

Frequently asked questions

What is CVE-2019-10309?: Jenkins Self-Organizing Swarm Plug-in Modules Plugin clients that use UDP broadcasts to discover Jenkins masters do not prevent XML External Entity processing when processing the responses, allowing unauthorized attackers on the same network to read arbitrary files from Swarm clients.
How severe is CVE-2019-10309?: CVE-2019-10309 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2019-10309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-10309?: CVE-2019-10309 affects Jenkins Self-organizing Swarm Modules. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-10309?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-10309 published?: CVE-2019-10309 was published on 2019-04-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:self-organizing_swarm_modules:-:*:*:*:*:jenkins:*:*

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