CVE-2026-63123

{"id": "CVE-2026-63123", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63123", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-25T14:19:26.459504Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "tinacms", "product": "tinacms", "versions": [{"status": "affected", "version": "< 2.5.2"}]}]}], "published": "2026-08-19T22:16:58.710", "references": [{"url": "https://github.com/tinacms/tinacms/commit/211997cdb53cbd43638bdee999faa65375cfc260", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/pull/7111", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/cli@2.5.2", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6x", "source": "security-advisories@github.com"}, {"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-rgr9-r7mj-mf6x", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-352"}]}], "descriptions": [{"lang": "en", "value": "Tina is a headless content management system. Prior to 2.5.2, the TinaCMS CLI package's Vite dev server packages/@tinacms/cli/src/next/vite/cors.ts origin callback returns false for a disallowed origin but does not reject the request, and packages/@tinacms/cli/src/next/vite/plugins.ts still routes POST /media/upload/* to mediaRouter.handlePost. The upload code in packages/@tinacms/cli/src/next/commands/dev-command/server/media.ts writes attacker-controlled multipart contents inside the configured media root. A remote attacker can cause a developer's browser to submit this state-changing request by inducing the developer to visit an attacker-controlled page while tinacms dev is running. This issue is fixed in version 2.5.2."}], "lastModified": "2026-09-10T21:18:16.573", "sourceIdentifier": "security-advisories@github.com"}