CVE-2026-24006
Published: 22 January 2026
Summary
CVE-2026-24006 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Lxsmnsyc Seroval. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 12.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SC-6 (Resource Availability) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-24006 is a denial-of-service vulnerability in the Seroval JavaScript library, which enables stringification of complex JavaScript values beyond the capabilities of JSON.stringify. The issue affects versions 1.4.0 and below, where serializing objects with extreme nesting depth exceeds the maximum call stack limit, leading to a crash. This corresponds to CWE-770 (Allocation of Resources Without Limits or Throttling) and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Attackers can exploit this vulnerability remotely with low complexity and no privileges or user interaction required. By supplying a maliciously crafted object with deeply nested structures to a Seroval serialization or deserialization function, an attacker triggers a stack overflow, causing the application to terminate or become unresponsive and resulting in high availability impact.
The Seroval security advisory (GHSA-3j22-8qj3-26mx) and associated commit (ce9408ebc87312fcad345a73c172212f2a798060) detail the fix in version 1.4.1, which introduces a configurable `depthLimit` parameter to serialization and deserialization methods. If the depth limit is exceeded, an error is thrown instead of allowing unbounded recursion.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-4134
Vulnerability details
Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, serialization of objects with extreme depth can exceed the maximum call stack limit. In version 1.4.1, Seroval introduces a `depthLimit` parameter in serialization/deserialization methods.…
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An error will be thrown if the depth limit is reached.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct stack overflow DoS via crafted nested input to exposed serialization function matches Application or System Exploitation for availability impact.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires timely remediation of the stack overflow flaw in Seroval versions 1.4.0 and below by patching to 1.4.1, which adds depth limiting to prevent DoS crashes.
Mandates validation of inputs to Seroval serialization/deserialization functions to reject objects with excessive nesting depth, blocking the CWE-770 resource exhaustion attack vector.
Enforces resource allocation limits, such as maximum recursion or stack depth, during processing of complex serialized objects to mitigate unbounded resource consumption leading to DoS.