CVE-2026-116584: Javascript Deserialization Unvalidated Element List Length
A deserialization routine reads a parsed node's element list ($NODE.$FIELD) and consumes its `length` to size an allocation or bound a decoder loop without first verifying that the list is a real Array. Because the node comes from untrusted deserialized input, an attacker can substitute an array-like such as {"length": 2000000000} or {"length": "Infinity"}:
JSgreprules fetch cve-2026-116584-javascript-deserialization-unvalidated-element-list-length --engine opengrepDescription
A deserialization routine reads a parsed node's element list ($NODE.$FIELD) and consumes its `length` to size an allocation or bound a decoder loop without first verifying that the list is a real Array. Because the node comes from untrusted deserialized input, an attacker can substitute an array-like such as {"length": 2000000000} or {"length": "Infinity"}:
Community feedback
0 rule-level signals from signed-in users.
- Useful reports
- 0
- Context false positives
- 0
- Metadata suggestions
- 0
Contextual precision
Aggregated from approved scan feedback. False-positive reports describe observed scan contexts, not a global rule verdict.
- Findings observed
- 0
- Projects
- 0
- Reporters
- 0
Precision details are collecting more signed-in reports before verdict counts or ratios are emphasized.
No approved finding verdicts yet.
No scan diagnostics reported yet.