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CVE-2017-18640 is a denial-of-service vulnerability in SnakeYAML versions before 1.26. The YAML Alias feature permits entity expansion during load operations. An attacker can provide recursively constructed YAML aliases that expand exponentially, consuming system resources in a billion-laughs-style attack.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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 SnakeYAML denial-of-service vulnerability in the YAML alias-processing feature that permits a Billion Laughs-style resource-exhaustion attack. The affected Rocky Linux host has the vulnerable prometheus-jmx-exporter package installed.
A SnakeYAML alias-expansion denial-of-service vulnerability.
A SnakeYAML denial-of-service vulnerability in which the YAML alias feature can be abused to conduct a Billion Laughs resource-exhaustion attack. The advisory delivers an updated prometheus-jmx-exporter package for Red Hat Enterprise Linux 8 that addresses the issue.
A SnakeYAML vulnerability in which the alias feature permits entity expansion during a load operation. This Red Hat advisory rates the Quarkus update addressing it as Moderate.
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.