{"answers":{"affected":"2 open source packages ship an affected version, including @tinacms/cli.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63123 exists.","fix":"Upgrade @tinacms/cli to 2.5.2 or later.","what":"CVE-2026-63123 is a medium-severity vulnerability in tinacms, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-63123 and fix it if it is affected.\n\nWhat it is: CVE-2026-63123 is a medium-severity vulnerability in tinacms, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63123 exists.\n\nAffected packages and fixed versions:\n- @tinacms/cli (npm): affected all versions; fixed in 2.5.2\n- @tinacms/cli (npm): affected all versions; fixed in 2.5.2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-63123/ (Markdown: https://insights.sbomify.com/CVE-2026-63123/index.md)","id":"CVE-2026-63123","markdown":"https://insights.sbomify.com/CVE-2026-63123/index.md","name":"CVE-2026-63123","record":{"aliases":["GHSA-rgr9-r7mj-mf6x"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"TinaCMS CLI dev server","requires_auth":"none","summary":"A remote attacker can force a developer's browser to upload arbitrary files to the TinaCMS dev server media root via cross-origin requests.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Tina: Cross-origin `POST /media/upload/*` requests can write arbitrary files into the Tina dev server media root","id":"CVE-2026-63123","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"csrf","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Incus vulnerable to root RCE via image backup.yaml symlink","id":"CVE-2026-63125"},"packages":[{"ecosystem":"npm","fixed":["2.5.2"],"introduced":["0"],"last_affected":[],"package":"@tinacms/cli","purl":null,"source":"GHSA-rgr9-r7mj-mf6x"},{"ecosystem":"npm","fixed":["2.5.2"],"introduced":["0"],"last_affected":[],"package":"@tinacms/cli","purl":"pkg:npm/%40tinacms/cli","source":"GHSA-rgr9-r7mj-mf6x"}],"prev":{"headline":"PGHoard: Incomplete Path Traversal fix in restore.py allows Arbitrary File Write","id":"CVE-2026-63120"},"products":["tinacms"],"published":"2026-08-19","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-25","vendors":["tinacms"]},"summary":"A remote attacker can force a developer's browser to upload arbitrary files to the TinaCMS dev server media root via cross-origin requests.","url":"https://insights.sbomify.com/CVE-2026-63123/"}