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HIGH

CVE-2026-84650

CVSS v3

8.8

HIGH

EPSS Score

0.5 %

exploit probability, as of 2026-10-04

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, transient fields cannot be excluded from deserialization, allowing attackers able to submit configuration updates to specify the values of transient fields that will be deserialized, the impact depending on how those fields are used.

Technical details

Published
2026-09-02
Last Modified
2026-09-02

Frequently asked questions

What is CVE-2026-84650?

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, transient fields cannot be excluded from deserialization, allowing attackers able to submit configuration updates to specify the values of transient fields that will be deserialized, the impact depending on how those fields are used.

Is CVE-2026-84650 actively exploited?

Active exploitation of CVE-2026-84650 has not been confirmed. Its EPSS score was 0.5% on 2026-10-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84650?

CVE-2026-84650 has a CVSS v3 base score of 8.8 (HIGH severity).

Is CVE-2026-84650 affecting your environment?

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