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CVE-2026-42520 is a path traversal vulnerability in Jenkins Credentials Binding Plugin affecting version 719.v80e905ef14eb_ and earlier. The plugin does not properly sanitize file names associated with file and zip file credentials. An attacker who is able to provide credentials to a job can exploit this flaw to cause files to be written outside the intended location and into arbitrary locations on the Jenkins node filesystem. In deployments where a low-privileged user is permitted to configure file or zip file credentials for a job that runs on the built-in node, the arbitrary file write condition can be leveraged to achieve remote code execution.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.