CVE-2026-117622VulnerabilityPublished 28 Oct 2026

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier allows agents to send exceptions implementing the Stapler

Source GCVE Database

Authoritative record:CVE-2026-117622· High

Not known to be exploited.

Data as of 28 Oct 2026, 19:57 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-7cp4-qcg4-38q2

What to do

Affected software

Product	Affected	Fixed in
Jenkins ProjectJenkins	Affected–	Fixed in–

AI-suggested

Until a fix is available, restrict or monitor agent process control to trusted entities to reduce exploitation risk.

Description

Jenkins versions 2.587 and earlier, including LTS 2.580.1 and earlier, contain a vulnerability that allows agents to send exceptions implementing the Stapler HttpResponse interface to the controller. This behavior results in a cross-site scripting (XSS) vulnerability that could be exploited by attackers who control agent processes.

Impact

An attacker with control over Jenkins agent processes can exploit this vulnerability to perform cross-site scripting attacks against the Jenkins controller. This could allow execution of arbitrary scripts in the context of the controller's web interface, potentially leading to session hijacking, unauthorized actions, or information disclosure within the Jenkins environment.

Summary

The vulnerability in Jenkins 2.587 and earlier, and LTS 2.580.1 and earlier, arises from the ability of agents to send exceptions that implement the Stapler HttpResponse interface to the Jenkins controller. This flaw enables a cross-site scripting (XSS) attack vector, where malicious input from compromised or malicious agents can be executed in the context of the controller, potentially leading to unauthorized script execution.

References

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