Jenkins Project up to 2.567.x Transient Field deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.5$0-$5k1.39

Summaryinfo

A vulnerability labeled as problematic has been found in Jenkins Project Jenkins up to 2.567.x. This impacts an unknown function of the component Transient Field. Such manipulation leads to deserialization. This vulnerability is listed as CVE-2026-84650. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Jenkins Project Jenkins up to 2.567.x. Affected by this issue is an unknown part of the component Transient Field. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at jenkins.io. This vulnerability is handled as CVE-2026-84650 since 09/01/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 2.568.x eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Jenkins 2.568.x

Timelineinfo

09/01/2026 CVE reserved
09/02/2026 +1 days Advisory disclosed
09/02/2026 +0 days VulDB entry created
09/02/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: jenkins.io
Status: Confirmed

CVE: CVE-2026-84650 (🔒)
GCVE (CVE): GCVE-0-2026-84650
GCVE (VulDB): GCVE-100-398198

Entryinfo

Created: 09/02/2026 18:04
Changes: 09/02/2026 18:04 (55)
Complete: 🔍
Cache ID: 216::103

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