{"id":"CVE-2026-23736","state":"PUBLISHED","title":"seroval Affected by Prototype Pollution via JSON Deserialization","description":"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.","publishedAt":"2026-01-21T23:01:10.114Z","updatedAt":"2026-01-22T14:45:53.950Z","severity":{"score":7.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["lxsmnsyc seroval"],"affected":[{"vendor":"lxsmnsyc","product":"seroval","versions":[{"version":"< 1.4.1","status":"affected"}]}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4","https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23736.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23736","state":"PUBLISHED","datePublished":"2026-01-21T23:01:10.114Z","dateUpdated":"2026-01-22T14:45:53.950Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-15T15:45:01.957Z"},"containers":{"cna":{"title":"seroval Affected by Prototype Pollution via JSON Deserialization","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"lxsmnsyc","product":"seroval","versions":[{"version":"< 1.4.1","status":"affected"}]}],"references":[{"url":"https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4","name":"https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-hj76-42vx-jwp4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060","name":"https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-21T23:01:45.857Z"},"source":{"advisory":"GHSA-hj76-42vx-jwp4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-22T14:45:46.259826Z","id":"CVE-2026-23736","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-22T14:45:53.950Z"}}]}}}