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CVE-2026-57303

HIGH
7.1
CVSS Score
Published: June 24, 2026 at 01:20 PM UTC
Updated: October 25, 2026 at 10:10 PM UTC
2 products affected across 2 vendorsAssemblaJenkins Assembla Plugin

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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Jenkins Assembla Plugin 1.4 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks, allowing attackers able to control the responses of the configured Assembla server to extract secrets from the Jenkins controller or perform server-side request forgery.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Assembla· Jenkinsjenkins-plugin
95%
v ≤ 1.4
Jenkins Assembla Plugin· Jenkins
90%
v ≤ 1.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3692%20(1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-918

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