{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115897", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-23T19:37:27.177Z", "datePublished": "2026-10-23T21:37:41.097Z", "dateUpdated": "2026-10-23T21:37:41.097Z"}, "containers": {"cna": {"title": "Serialize JavaScript: Cross-site scripting (XSS) via unescaped </script at the end of a serialized function body", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 2.1, "baseSeverity": "LOW", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h7-m29v", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h7-m29v"}, {"name": "https://github.com/yahoo/serialize-javascript/pull/235", "tags": ["x_refsource_MISC"], "url": "https://github.com/yahoo/serialize-javascript/pull/235"}, {"name": "https://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70d1a079de108a61", "tags": ["x_refsource_MISC"], "url": "https://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70d1a079de108a61"}, {"name": "https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3"}], "affected": [{"vendor": "yahoo", "product": "serialize-javascript", "versions": [{"version": "< 7.1.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-23T21:37:41.097Z"}, "descriptions": [{"lang": "en", "value": "Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. Prior to 7.1.3, the function-source escaping logic does not neutralize a bare closing-script prefix when attacker-influenced function source text ends exactly at that prefix. Because each function body is escaped independently, a delimiter supplied by surrounding serialized output can terminate an HTML script element, and a later serialized value supplies injected markup that becomes a live element in the page. Exploitation requires control of a serialized function's source text, such as through a spoofed toString(). This issue is fixed in version 7.1.3."}], "source": {"advisory": "GHSA-m5mm-p8h7-m29v", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "serialize-javascript", "vendor": "yahoo", "versions": [{"status": "affected", "version": "< 7.1.3"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. Prior to 7.1.3, the function-source escaping logic does not neutralize a bare closing-script prefix when attacker-influenced function source text ends exactly at that prefix. Because each function body is escaped independently, a delimiter supplied by surrounding serialized output can terminate an HTML script element, and a later serialized value supplies injected markup that becomes a live element in the page. Exploitation requires control of a serialized function's source text, such as through a spoofed toString(). This issue is fixed in version 7.1.3."}], "id": "CVE-2026-115897", "lastModified": "2026-10-23T22:16:59.153", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-23T22:16:59.153", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70d1a079de108a61"}, {"source": "security-advisories@github.com", "url": "https://github.com/yahoo/serialize-javascript/pull/235"}, {"source": "security-advisories@github.com", "url": "https://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h7-m29v"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "serialize-javascript: serialize-javascript: Cross-Site Scripting via improper function escaping", "id": "2560226", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2560226"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["A flaw was found in serialize-javascript. This vulnerability allows an attacker to conduct Cross-Site Scripting (XSS) by supplying crafted function source text that bypasses escaping logic. When the resulting serialized data is rendered inside an HTML script block on a web page, the unneutralized closing script delimiter prematurely terminates the block and allows injected markup to execute arbitrary scripts in the user's browser."], "name": "CVE-2026-115897", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "dotnet10.0", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "dotnet8.0", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "dotnet9.0", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "grafana12.4", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana13.1", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana13.2", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "prometheus3.13", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-23T21:37:41Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-115897\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-115897\nhttps://github.com/yahoo/serialize-javascript/commit/2864b3c6260a3bfd52d2db3e70d1a079de108a61\nhttps://github.com/yahoo/serialize-javascript/pull/235\nhttps://github.com/yahoo/serialize-javascript/releases/tag/v7.1.3\nhttps://github.com/yahoo/serialize-javascript/security/advisories/GHSA-m5mm-p8h7-m29v"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.1.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "serialize-javascript", "source": "cna", "vendor": "yahoo"}, "product": "serialize-javascript", "vendor": "yahoo"}], "created": "2026-10-23T22:30:14.518596+00:00", "updated": "2026-10-23T23:30:17.456614+00:00", "vendors": ["yahoo", "yahoo$PRODUCT$serialize-javascript"]}