CVE-2026-54565

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54565", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T19:15:27.342Z", "datePublished": "2026-09-17T20:19:10.133Z", "dateUpdated": "2026-09-21T21:13:40.752Z"}, "containers": {"cna": {"title": "rhwp browser extension performs SSRF / private-network requests and leaks HWP preview data to untrusted pages", "problemTypes": [{"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-359", "lang": "en", "description": "CWE-359: Exposure of Private Personal Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-1385", "lang": "en", "description": "CWE-1385: Missing Origin Validation in WebSockets", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/edwardkim/rhwp/security/advisories/GHSA-j972-m9fh-g22m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/edwardkim/rhwp/security/advisories/GHSA-j972-m9fh-g22m"}, {"name": "https://github.com/edwardkim/rhwp/commit/e07b76ba79f42078c6cdf1045b58f894ec55bdf9", "tags": ["x_refsource_MISC"], "url": "https://github.com/edwardkim/rhwp/commit/e07b76ba79f42078c6cdf1045b58f894ec55bdf9"}, {"name": "https://github.com/edwardkim/rhwp/releases/tag/v0.7.15", "tags": ["x_refsource_MISC"], "url": "https://github.com/edwardkim/rhwp/releases/tag/v0.7.15"}], "affected": [{"vendor": "edwardkim", "product": "rhwp", "versions": [{"version": "< 0.7.15", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-17T20:19:10.133Z"}, "descriptions": [{"lang": "en", "value": "rhwp is an HWP viewer and editor implemented in Rust and WebAssembly. Prior to rhwp 0.7.15 and rhwp Chrome and Firefox extension 0.2.4, the browser extensions use an all-URLs host permission to detect HWP and HWPX links on visited pages, but the service workers do not validate message senders, URL schemes, or destination addresses before privileged fetches. The affected paths are rhwp-chrome/manifest.json, rhwp-chrome/content-script.js, rhwp-chrome/sw/message-router.js, rhwp-chrome/sw/thumbnail-extractor.js, rhwp-firefox/manifest.json, rhwp-firefox/content-script.js, rhwp-firefox/sw/message-router.js, and rhwp-firefox/sw/thumbnail-extractor.js. An untrusted page can make the fetch-file and extract-thumbnail handlers request localhost or private-network resources. When a target HWP or HWPX file contains an extractable PrvImage, the extension returns the preview as a data URI in page-readable DOM, allowing page script to read it. The flaw also permits internal-resource existence and port probing and extension presence or version fingerprinting. Exploitation requires a user to visit an untrusted page while the extension is enabled, and preview disclosure is limited to an extractable PrvImage. This issue is fixed in rhwp 0.7.15 and rhwp Chrome and Firefox extension 0.2.4."}], "source": {"advisory": "GHSA-j972-m9fh-g22m", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-21T21:13:29.847940Z", "id": "CVE-2026-54565", "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": "2026-09-21T21:13:40.752Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-54565", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-21T21:13:29.847940Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T21:13:35.089Z"}}], "cna": {"title": "rhwp browser extension performs SSRF / private-network requests and leaks HWP preview data to untrusted pages", "source": {"advisory": "GHSA-j972-m9fh-g22m", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "edwardkim", "product": "rhwp", "versions": [{"status": "affected", "version": "< 0.7.15"}]}], "references": [{"url": "https://github.com/edwardkim/rhwp/security/advisories/GHSA-j972-m9fh-g22m", "name": "https://github.com/edwardkim/rhwp/security/advisories/GHSA-j972-m9fh-g22m", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/edwardkim/rhwp/commit/e07b76ba79f42078c6cdf1045b58f894ec55bdf9", "name": "https://github.com/edwardkim/rhwp/commit/e07b76ba79f42078c6cdf1045b58f894ec55bdf9", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/edwardkim/rhwp/releases/tag/v0.7.15", "name": "https://github.com/edwardkim/rhwp/releases/tag/v0.7.15", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "rhwp is an HWP viewer and editor implemented in Rust and WebAssembly. Prior to rhwp 0.7.15 and rhwp Chrome and Firefox extension 0.2.4, the browser extensions use an all-URLs host permission to detect HWP and HWPX links on visited pages, but the service workers do not validate message senders, URL schemes, or destination addresses before privileged fetches. The affected paths are rhwp-chrome/manifest.json, rhwp-chrome/content-script.js, rhwp-chrome/sw/message-router.js, rhwp-chrome/sw/thumbnail-extractor.js, rhwp-firefox/manifest.json, rhwp-firefox/content-script.js, rhwp-firefox/sw/message-router.js, and rhwp-firefox/sw/thumbnail-extractor.js. An untrusted page can make the fetch-file and extract-thumbnail handlers request localhost or private-network resources. When a target HWP or HWPX file contains an extractable PrvImage, the extension returns the preview as a data URI in page-readable DOM, allowing page script to read it. The flaw also permits internal-resource existence and port probing and extension presence or version fingerprinting. Exploitation requires a user to visit an untrusted page while the extension is enabled, and preview disclosure is limited to an extractable PrvImage. This issue is fixed in rhwp 0.7.15 and rhwp Chrome and Firefox extension 0.2.4."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-200", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-359", "description": "CWE-359: Exposure of Private Personal Information to an Unauthorized Actor"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-918", "description": "CWE-918: Server-Side Request Forgery (SSRF)"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1385", "description": "CWE-1385: Missing Origin Validation in WebSockets"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-17T20:19:10.133Z"}}}, "cveMetadata": {"cveId": "CVE-2026-54565", "state": "PUBLISHED", "dateUpdated": "2026-09-21T21:13:40.752Z", "dateReserved": "2026-06-15T19:15:27.342Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-09-17T20:19:10.133Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "rhwp", "vendor": "edwardkim", "versions": [{"status": "affected", "version": "< 0.7.15"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "rhwp is an HWP viewer and editor implemented in Rust and WebAssembly. Prior to rhwp 0.7.15 and rhwp Chrome and Firefox extension 0.2.4, the browser extensions use an all-URLs host permission to detect HWP and HWPX links on visited pages, but the service workers do not validate message senders, URL schemes, or destination addresses before privileged fetches. The affected paths are rhwp-chrome/manifest.json, rhwp-chrome/content-script.js, rhwp-chrome/sw/message-router.js, rhwp-chrome/sw/thumbnail-extractor.js, rhwp-firefox/manifest.json, rhwp-firefox/content-script.js, rhwp-firefox/sw/message-router.js, and rhwp-firefox/sw/thumbnail-extractor.js. An untrusted page can make the fetch-file and extract-thumbnail handlers request localhost or private-network resources. When a target HWP or HWPX file contains an extractable PrvImage, the extension returns the preview as a data URI in page-readable DOM, allowing page script to read it. The flaw also permits internal-resource existence and port probing and extension presence or version fingerprinting. Exploitation requires a user to visit an untrusted page while the extension is enabled, and preview disclosure is limited to an extractable PrvImage. This issue is fixed in rhwp 0.7.15 and rhwp Chrome and Firefox extension 0.2.4."}], "id": "CVE-2026-54565", "lastModified": "2026-09-24T21:25:27.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54565", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-21T21:13:29.847940Z", "version": "2.0.3"}}]}, "published": "2026-09-17T21:17:16.543", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/edwardkim/rhwp/commit/e07b76ba79f42078c6cdf1045b58f894ec55bdf9"}, {"source": "security-advisories@github.com", "url": "https://github.com/edwardkim/rhwp/releases/tag/v0.7.15"}, {"source": "security-advisories@github.com", "url": "https://github.com/edwardkim/rhwp/security/advisories/GHSA-j972-m9fh-g22m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-359"}, {"lang": "en", "value": "CWE-918"}, {"lang": "en", "value": "CWE-1385"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.7.15)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "rhwp", "source": "cna", "vendor": "edwardkim"}, "product": "rhwp", "vendor": "edwardkim"}], "created": "2026-09-18T20:00:41.979591+00:00", "updated": "2026-09-19T02:30:17.317123+00:00", "vendors": ["edwardkim", "edwardkim$PRODUCT$rhwp"]}