{"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": "2026-06-26T19:00:10.717Z"}, "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"}}}}

{}

{}

{}

{"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"]}