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{}

{"bugzilla": {"description": "openvsx: Open VSX Registry: Supply chain attack via cross-site scripting", "id": "2495898", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2495898"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["A flaw was found in Open VSX Registry. The /vscode/unpkg/ endpoint serves user-supplied HTML files with a Content-Type of text/html without Content-Security-Policy or Content-Disposition: attachment response headers. An attacker with a registered publisher account can upload a VSIX containing a crafted HTML payload and induce an authenticated user to visit the resulting URL. The browser renders the file inline in the open-vsx.org origin context, allowing session token exfiltration, persistent Personal Access Token (PAT) generation, and unauthorized publication of malicious extension versions"], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-13323", "package_state": [{"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Fix deferred", "package_name": "devspaces/openvsx-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2026-07-01T11:28:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-13323\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-13323\nhttps://github.com/eclipse-openvsx/openvsx/pull/1922\nhttps://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/485"], "statement": "This Moderate flaw in Open VSX Registry, as utilized by Red Hat OpenShift Dev Spaces, involves a cross-site scripting vulnerability. The `/vscode/unpkg/` endpoint serves user-supplied HTML without adequate security headers. An attacker with a registered publisher account could upload a crafted extension, and if an authenticated user is enticed to visit a specific URL, their session tokens could be exfiltrated, or unauthorized extension publications could occur. This requires both attacker prerequisites and user interaction, which limits the overall impact.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.1.0,1.0.2)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Eclipse Open VSX", "source": "cna", "vendor": "Eclipse Foundation"}, "product": "open_vsx", "vendor": "eclipse"}], "created": "2026-07-01T15:00:06.694518+00:00", "updated": "2026-07-02T16:30:15.973190+00:00", "vendors": ["eclipse", "eclipse$PRODUCT$open_vsx"]}