CVE-2026-34748

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.78.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "payload", "source": "cna", "vendor": "payloadcms"}, "product": "payload", "vendor": "payloadcms"}], "analysis": {"en": {"generated_at": "2026-04-13T21:46:01.754927+00:00", "value": {"mitigation_remediation": ["Upgrade Payload to version\u202f3.78.0 or later.", "Restrict write access to trusted users only."], "summary": {"action": "Immediate Patch", "impact": "Stored Cross\u2011Site Scripting in Admin Panel"}, "threat_synthesis": {"affected_systems": "The flaw affects the @payloadcms/next module of Payload CMS, a free, open\u2011source headless content management system. Any deployment running @payloadcms/next before version\u202f3.78.0 is impacted, regardless of the underlying Node.js environment.", "description_and_impact": "A vulnerability allows an authenticated user with write permissions in Payload\u2019s admin panel to store malicious JavaScript content. When a different authenticated user later views the stored content, the script runs in that user\u2019s browser, enabling arbitrary client\u2011side code execution. The weakness is a stored Cross\u2011Site Scripting flaw identified as CWE\u201179.", "risk_and_exploitability": "The CVSS score of 8.7 classifies the issue as high severity. The EPSS score of less than\u202f1\u202f% suggests a low probability of exploitation in the wild. The vulnerability is not listed in CISA\u2019s KEV catalog, indicating no known widespread exploit. An attacker would need valid credentials with write access to a collection; once malicious content is stored, any authenticated user who views the content experiences script execution. Consequently, the risk is primarily significant for systems where write permissions are broadly granted or where compromised accounts exist."}}}}, "created": "2026-04-02T07:47:57.871637+00:00", "updated": "2026-04-14T16:42:08.869421+00:00", "vendors": ["payloadcms", "payloadcms$PRODUCT$payload"]}