Is CVE-2026-57303 in the CISA KEV catalog?

No. CVE-2026-57303 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-57303?

CVE-2026-57303 has a CVSS v3 base score of 7.1 (HIGH).

CVE & CISA-KEV Catalog

CVE-2026-57303

HIGH

7.1

CVSS v3

NVD

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.

CWE-918Server-Side Request Forgery (SSRF)

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Exploit Intelligence

EPSS data unavailable for this CVE.

References

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

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-24.