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GeekWala

CVE-2017-1000353

CRITICAL
Actively Exploited

Deserialization of Untrusted Data in Jenkins

Published May 13, 2022Updated October 22, 2025Source: osv

What Should I Do?

Patch Immediately

This vulnerability is confirmed under active exploitation (CISA KEV). Patch within 24-48 hours if possible.

Summary

Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java `SignedObject` object to the Jenkins CLI, that would be deserialized using a new `ObjectInputStream`, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding `SignedObject` to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update org.jenkins-ci.main:jenkins-core to 2.46.2 or later
<!-- Update pom.xml dependency version to 2.46.2 for org.jenkins-ci.main:jenkins-core -->
Maven
Update org.jenkins-ci.main:jenkins-core to 2.57 or later
<!-- Update pom.xml dependency version to 2.57 for org.jenkins-ci.main:jenkins-core -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

PackageEcosystemAffectedFixed In
org.jenkins-ci.main:jenkins-core
maven
1.396, 1.397, 1.398, 1.399 (+384 more)2.46.2
org.jenkins-ci.main:jenkins-core
maven
2.50, 2.51, 2.52, 2.53 (+3 more)2.57

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-502
    Deserialization of Untrusted DataMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H

References

Frequently Asked Questions

What is CVE-2017-1000353?
Deserialization of Untrusted Data in Jenkins This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2017-1000353?
CVE-2017-1000353 affects org.jenkins-ci.main:jenkins-core. This vulnerability is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, meaning it is being actively exploited in the wild. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-1000353 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Known Exploited Vulnerability

This vulnerability is in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild.

Remediation deadline: October 23, 2025

Also Known As

GHSA-26wc-3wqp-g3rp

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