CVE-2026-52781

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52781", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-08T17:13:43.065Z", "datePublished": "2026-06-26T19:00:10.717Z", "dateUpdated": "2026-06-29T13:24:43.334Z"}, "containers": {"cna": {"title": "OpenProject: Stored XSS on openproject.example.com through /api/v3/projects/{project}/work_packages via POST parameter \"description\"", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/opf/openproject/security/advisories/GHSA-q33w-f822-hg8x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/opf/openproject/security/advisories/GHSA-q33w-f822-hg8x"}], "affected": [{"vendor": "opf", "product": "openproject", "versions": [{"version": "< 17.3.3", "status": "affected"}, {"version": ">= 17.4.0, < 17.4.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T19:00:10.717Z"}, "descriptions": [{"lang": "en", "value": "OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, the HTML sanitizer grants <macro> elements unrestricted data-* attributes via :data wildcard. An attacker injects data-controller=\"poll-for-changes\" into a work package description, causing Stimulus.js to mount a controller that fetches an attacker-uploaded attachment and passes it to renderStreamMessage(). This executes arbitrary Turbo Stream actions \u2014 including redirect_to \u2014 in every victim's authenticated browser session, redirecting them to an attacker-controlled server. This vulnerability is fixed in 17.3.3 and 17.4.1."}], "source": {"advisory": "GHSA-q33w-f822-hg8x", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-29T13:24:36.959287Z", "id": "CVE-2026-52781", "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": "2026-06-29T13:24:43.334Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-52781", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-29T13:24:36.959287Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-29T13:24:40.543Z"}}], "cna": {"title": "OpenProject: Stored XSS on openproject.example.com through /api/v3/projects/{project}/work_packages via POST parameter \"description\"", "source": {"advisory": "GHSA-q33w-f822-hg8x", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "opf", "product": "openproject", "versions": [{"status": "affected", "version": "< 17.3.3"}, {"status": "affected", "version": ">= 17.4.0, < 17.4.1"}]}], "references": [{"url": "https://github.com/opf/openproject/security/advisories/GHSA-q33w-f822-hg8x", "name": "https://github.com/opf/openproject/security/advisories/GHSA-q33w-f822-hg8x", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, the HTML sanitizer grants <macro> elements unrestricted data-* attributes via :data wildcard. An attacker injects data-controller=\"poll-for-changes\" into a work package description, causing Stimulus.js to mount a controller that fetches an attacker-uploaded attachment and passes it to renderStreamMessage(). This executes arbitrary Turbo Stream actions \u2014 including redirect_to \u2014 in every victim's authenticated browser session, redirecting them to an attacker-controlled server. This vulnerability is fixed in 17.3.3 and 17.4.1."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T19:00:10.717Z"}}}, "cveMetadata": {"cveId": "CVE-2026-52781", "state": "PUBLISHED", "dateUpdated": "2026-06-29T13:24:43.334Z", "dateReserved": "2026-06-08T17:13:43.065Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-26T19:00:10.717Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "openproject", "vendor": "opf", "versions": [{"status": "affected", "version": "< 17.3.3"}, {"status": "affected", "version": ">= 17.4.0, < 17.4.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, the HTML sanitizer grants <macro> elements unrestricted data-* attributes via :data wildcard. An attacker injects data-controller=\"poll-for-changes\" into a work package description, causing Stimulus.js to mount a controller that fetches an attacker-uploaded attachment and passes it to renderStreamMessage(). This executes arbitrary Turbo Stream actions \u2014 including redirect_to \u2014 in every victim's authenticated browser session, redirecting them to an attacker-controlled server. This vulnerability is fixed in 17.3.3 and 17.4.1."}, {"lang": "es", "value": "OpenProject es un software de gesti\u00f3n de proyectos de c\u00f3digo abierto y basado en la web. Antes de las versiones 17.3.3 y 17.4.1, el saneador de HTML concede a los elementos [macro] atributos data-* sin restricciones a trav\u00e9s del comod\u00edn :data. Un atacante inyecta data-controller=\u2019poll-for-changes\u2019 en la descripci\u00f3n de un paquete de trabajo, lo que provoca que Stimulus.js monte un controlador que recupera un archivo adjunto subido por el atacante y lo pasa a renderStreamMessage(). Esto ejecuta acciones arbitrarias de Turbo Stream -incluyendo redirect_to- en la sesi\u00f3n de navegador autenticada de cada v\u00edctima, redirigi\u00e9ndolas a un servidor controlado por el atacante. Esta vulnerabilidad se corrige en las versiones 17.3.3 y 17.4.1."}], "id": "CVE-2026-52781", "lastModified": "2026-10-25T17:10:00.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52781", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-29T13:24:36.959287Z", "version": "2.0.3"}}]}, "published": "2026-06-26T20:17:18.613", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/opf/openproject/security/advisories/GHSA-q33w-f822-hg8x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,17.3.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[17.4.0,17.4.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "openproject", "source": "cna", "vendor": "opf"}, "product": "openproject", "vendor": "opf"}], "created": "2026-06-26T20:30:06.196864+00:00", "updated": "2026-06-26T22:45:05.686764+00:00", "vendors": ["opf", "opf$PRODUCT$openproject"]}