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CVE-2021-21607 is a resource-exhaustion vulnerability in Jenkins graph-rendering URLs. Jenkins 2.274 and earlier, and Jenkins LTS 2.263.1 and earlier, fail to impose limits on graph-size values supplied through query parameters. A low-privileged remote attacker can submit crafted graph-rendering requests that cause excessive memory allocation, exhausting memory available to the Jenkins controller and producing out-of-memory errors.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced by this OpenShift Container Platform security advisory; no further details are provided in the content.
A Jenkins denial-of-service vulnerability caused by excessive memory allocation when processing graph URLs.
A Jenkins denial-of-service vulnerability caused by excessive memory allocation in graph URLs.
A moderate-severity Jenkins denial-of-service vulnerability caused by unbounded resource allocation in graph-rendering URL query parameters. A low-privileged network attacker can submit crafted requests that exhaust available memory and cause out-of-memory errors.
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.