{"id":"CVE-2026-116580","sourceIdentifier":"security-advisories@github.com","published":"2026-10-26T21:18:15.523","lastModified":"2026-10-26T21:18:15.870","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.8, fromJSON rebuilds an AsyncIteratorFactoryInstance by calling source.on(listener) without requiring source to be a genuine internal stream. With untrusted Seroval input and an application plugin that returns a callable value or an object exposing an on method, a crafted node can reuse an identifier so the deserializer invokes the plugin-produced value. This is an incomplete-fix variant of CVE-2026-59940. The resulting confidentiality, integrity, or availability impact depends on the behavior exposed by the application plugin. This issue is fixed in version 1.6.8."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"lxsmnsyc","product":"seroval","versions":[{"version":"< 1.6.8","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","baseScore":7.3,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":3.4}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-502"}]}],"references":[{"url":"https://github.com/lxsmnsyc/seroval/commit/3edc78b495ea0d6bd498143e5b3e56996607c5f2","source":"security-advisories@github.com"},{"url":"https://github.com/lxsmnsyc/seroval/commit/50926b3ee198fb757e6ce3aa70efeed38d931c8d","source":"security-advisories@github.com"},{"url":"https://github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.8","source":"security-advisories@github.com"},{"url":"https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-7rv5-mrxv-xcr9","source":"security-advisories@github.com"}]}