{"answers":{"affected":"2 open source packages ship an affected version, including @tinacms/web-components.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108260 exists.","fix":"Upgrade @tinacms/web-components to 0.2.1 or later.","what":"CVE-2026-108260 is a high-severity cross-site scripting vulnerability in @tinacms tinacms, published on 9 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-108260 and fix it if it is affected.\n\nWhat it is: CVE-2026-108260 is a high-severity cross-site scripting vulnerability in @tinacms tinacms, published on 9 Oct 2026. Any signed-in user can exploit it over the network, 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-2026-108260 exists.\n\nAffected packages and fixed versions:\n- @tinacms/web-components (npm): affected all versions; fixed in 0.2.1\n- @tinacms/web-components (npm): affected all versions; fixed in 0.2.1\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-2026-108260/ (Markdown: https://insights.sbomify.com/CVE-2026-108260/index.md)","id":"CVE-2026-108260","markdown":"https://insights.sbomify.com/CVE-2026-108260/index.md","name":"CVE-2026-108260","record":{"aliases":["GHSA-c42q-qvc3-j6vg"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"TinaCMS web components","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts via stored links in TinaCMS, leading to code execution and potential credential theft for site visitors.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-83","name":"Improper Neutralization of Script in Attributes in a Web Page"},{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site's origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1.","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":"@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS","id":"CVE-2026-108260","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"TinaCMS admin preview iframe loads an attacker-controlled origin from the URL fragment","id":"CVE-2026-108261"},"packages":[{"ecosystem":"npm","fixed":["0.2.1"],"introduced":["0"],"last_affected":[],"package":"@tinacms/web-components","purl":null,"source":"GHSA-c42q-qvc3-j6vg"},{"ecosystem":"npm","fixed":["0.2.1"],"introduced":["0"],"last_affected":[],"package":"@tinacms/web-components","purl":"pkg:npm/%40tinacms/web-components","source":"GHSA-c42q-qvc3-j6vg"}],"prev":{"headline":"Tina: Code injection via unescaped Git branch name in generated client source","id":"CVE-2026-108259"},"products":["tinacms","web-components"],"published":"2026-10-09","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":"2026-10-13","vendors":["@tinacms","tinacms"]},"summary":"Attackers can inject malicious scripts via stored links in TinaCMS, leading to code execution and potential credential theft for site visitors.","url":"https://insights.sbomify.com/CVE-2026-108260/"}