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CVE-2026-84654 is an improper form-data binding vulnerability in Stapler 2107.v8dfcb_e8ed317 and earlier, except 2088.2093.vd7c3e58008a_6, as bundled with Jenkins 2.579 and earlier and Jenkins LTS 2.568.2 and earlier. Stapler form binding permits submitted configuration data to assign values to public static fields of the configuration object bound to a form. Because static fields are shared, attacker-supplied changes affect the Jenkins instance globally rather than only the intended configuration object.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Jenkins/Jenkins LTS vulnerability addressed through FreeBSD package security updates; the content provides no vulnerability-class or technical-impact detail.
A Stapler form-data-binding vulnerability included in Jenkins that lets attackers able to submit configuration forms set public static fields on bound configuration objects, causing configuration changes with global effect across the Jenkins instance.
Unknown; the vulnerability is referenced as affecting the identified Jenkins release range, but no technical description is provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.