Analyst readout for executives and security teams
Plain-English summary
This issue lets an attacker trick a Jenkins user into unintentionally resuming failed Multijob builds. The direct impact is limited to build integrity, but in CI/CD environments even unintended job execution can waste resources, disrupt release flow, or trigger downstream automation.
Executive priority
Treat this as a moderate CI/CD integrity issue. It is not presented as remote code execution or data exposure, but affected Jenkins environments should remediate promptly because build automation can affect releases and operational reliability.
Technical view
CVE-2026-9674 is a CSRF flaw in Jenkins Multijob Plugin 662.vd2e0001f6b_b_d and earlier. The published CVSS 3.1 score is 4.3, with network attack vector, low complexity, required user interaction, no privileges required, and low integrity impact only.
Likely exposure
Exposure is limited to Jenkins installations using the Multijob Plugin at version 662.vd2e0001f6b_b_d or earlier. Organizations not running this plugin are not indicated as affected by the provided sources.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not listed as KEV. Exploitation requires user interaction and appears limited to causing failed Multijob builds to resume, not data theft or system compromise.
Researcher notes
Evidence is narrow: the provided sources identify CSRF in the Jenkins Multijob Plugin and the allowed action, but do not include exploit details, patch version, workaround text, or real-world exploitation claims. Avoid assuming broader Jenkins compromise.
Mitigation direction
- Check the Jenkins advisory for vendor-approved fixed versions or workarounds.
- Upgrade Jenkins Multijob Plugin when a vendor-supported fixed release is available.
- Remove or disable the plugin if it is not operationally required.
- Restrict Jenkins access to trusted users and networks.
- Review failed-build resume activity for unexpected or unauthorized actions.
Validation and detection
- Inventory Jenkins controllers for installed Multijob Plugin versions.
- Flag versions 662.vd2e0001f6b_b_d and earlier as potentially affected.
- Confirm whether the plugin is used in production pipelines.
- Review build history for unexpected resumes of failed Multijob builds.
- Track Jenkins advisory SECURITY-3781 for remediation status.
Public sources used
Based on public source material and reviewed before publication.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-9674 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N 2.8 1.4 CISA-ADP Vulnerability scoring details
Base CVSS 3.1 score
4.3 MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reserved CVE Program
The CVE ID was reserved by the assigning CNA.
- CVE published CVE Program
The CVE record was published.
- CVE updated CVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 source CVE List V5
- Jenkins Security Advisory 2026-05-27 CVE reference, jenkins · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.