Exploitation status
KEV status unavailable
The KEV source did not return a conclusive status.
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Indicator investigation
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Indicator
Type cve · source NVD CVE
HIGH SEVERITY (CVSS 7.5)
Vulnerability investigation
CISA KEV status could not be verified from the available evidence. NVD rates the technical severity high at CVSS 7.5. These are public vulnerability signals, not proof that a specific environment runs an affected version.
Exploitation status
KEV status unavailable
The KEV source did not return a conclusive status.
30-day exploitation likelihood
Unavailable
FIRST EPSS did not return a score.
Technical severity
7.5 · high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected surface
Product applicability incomplete
No structured product mapping is available.
Weakness class
CWE-400: Uncontrolled Resource Consumption, CWE-407
CWE describes the weakness category, not whether a deployed product is reachable or exploitable.
Corpus evidence
1 connectors · 2 citations
No related report text is available in the local corpus.
Findings stay bounded to named sources and observable infrastructure.
js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2 and 4.3.2, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js does not count empty mapping sources while processing the merge key <<. An attacker can alias a large sequence of empty mappings into many merge targets, causing O(N * K) processing while totalMergeKeys remains unchanged and the configured resource limit is never reached. A relatively small YAML document can therefore cause prolonged CPU consumption in applications that parse untrusted YAML, and merge processing is enabled by default on these release lines. This issue is fixed in versions 3.15.2 and 4.3.2.
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Investigation status
Checking for newly completed evidence
NIST NVD
NVD evidence is available in this response
CISA KEV
Known-exploitation catalog check is pending
FIRST EPSS
Forensia does not request or publish EPSS while source rights are under review
Reports
Report links are still being resolved
Relationships
Product and vulnerability relationships are still being prepared
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