{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-93981", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-19T10:55:49.092Z", "datePublished": "2026-09-19T11:53:34.294Z", "dateUpdated": "2026-09-21T20:47:06.182Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-19T11:53:34.294Z" }, "datePublic": "2026-09-04T00:00:00.000Z", "title": "hono/jsx before 4.13.7 Cross-Site Scripting via Unescaped Strings", "descriptions": [ { "lang": "en", "value": "hono before 4.13.7 fails to HTML-escape plain strings rendered by hono/jsx as a child or fallback of Suspense, as a string child of ErrorBoundary alongside an asynchronous sibling, as the single child of a Context.Provider, or as the root value passed to renderToString() or renderToReadableStream() from hono/jsx/dom/server. These paths stringify their input and treat the result as already-escaped markup, so an attacker who controls such a string during server-side rendering can inject arbitrary HTML and execute script under the application's origin." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE" } ] } ], "affected": [ { "vendor": "honojs", "product": "hono", "defaultStatus": "unaffected", "packageURL": "pkg:npm/hono", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "4.13.7" }, { "version": "4.13.7", "status": "unaffected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:hono:hono:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.13.7" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 2.3, "baseSeverity": "LOW" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-hxh3-vqpv-xpqv)" }, { "name": "VulnCheck Advisory: hono/jsx before 4.13.7 Cross-Site Scripting via Unescaped Strings", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/hono-jsx-before-4.13.7-cross-site-scripting-via-unescaped-strings" } ], "credits": [ { "lang": "en", "value": "ggmolly", "type": "reporter" } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-21T16:22:56.367930Z", "id": "CVE-2026-93981", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T20:47:06.182Z" } } ] } }