CVE-2026-23736: high-severity vulnerability in lxsmnsyc seroval
seroval Affected by Prototype Pollution via JSON Deserialization
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.3epss 0.3%
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, due to improper input validation, a malicious object key can lead to prototype pollution during JSON deserialization. This vulnerability affects only JSON deserialization functionality. This issue is fixed in version 1.4.1.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected products
lxsmnsyc · serovalRelated CVEs — lxsmnsyc seroval
In the same product, most dangerous first.
CVE-2026-59940CRITICALSeroval: `seroval.fromJSON()` Promise resolver type confusion invokes attacker-controlled methods during deserializationEPSS 0.8%CVE-2026-23737HIGHseroval Affected by Remote Code Execution via JSON DeserializationEPSS 0.6%CVE-2026-23956HIGHseroval affected by Denial of Service via RegExp serializationEPSS 0.5%CVE-2026-116581HIGHSeroval: fromJSON deserializer trusts sequence doneAt (unauthenticated event-loop DoS)EPSS 0.5%CVE-2026-24006HIGHSeroval affected by Denial of Service via Deeply Nested ObjectsEPSS 0.4%CVE-2026-23957HIGHseroval is vulnerable to Denial of Service via array serializationEPSS 0.4%