{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-103438 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-103438 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-103438 is a low-severity cross-site scripting vulnerability in The Wikimedia Foundation MediaWiki Wikistories extension, published on 30 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-103438 and fix it if it is affected.\n\nWhat it is: CVE-2026-103438 is a low-severity cross-site scripting vulnerability in The Wikimedia Foundation MediaWiki Wikistories extension, published on 30 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-103438 in the wild and no public exploit code.\n\nAffected product: The Wikimedia Foundation MediaWiki Wikistories extension. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-103438/ (Markdown: https://insights.sbomify.com/CVE-2026-103438/index.md)","id":"CVE-2026-103438","markdown":"https://insights.sbomify.com/CVE-2026-103438/index.md","name":"CVE-2026-103438","record":{"aliases":["GHSA-9jgx-vg2f-mrmp"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"MediaWiki Wikistories extension","requires_auth":"high_privilege","summary":"An XSS vulnerability in the MediaWiki Wikistories extension allows attackers to inject malicious scripts into web pages viewed by other users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":0.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber","version":"4.0"},"cwes":[{"id":"CWE-80","name":"Improper Neutralization of Script-Related HTML Tags in a Web Page"}],"description":"Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikistories extension allows Cross-Site Scripting (XSS).\n\nThis issue affects MediaWiki Wikistories extension: 1.46, 1.45, and 1.43.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Various rawParams() and escaped() updates to prevent XSS in Wikistories extension","id":"CVE-2026-103438","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Various rawParams() and escaped() updates to prevent XSS in Wikibase extension","id":"CVE-2026-103439"},"packages":[],"prev":{"headline":"ReadingLists imported metadata permits JavaScript URL XSS","id":"CVE-2026-103437"},"products":["MediaWiki Wikistories extension"],"published":"2026-09-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-30","vendors":["The Wikimedia Foundation"]},"summary":"An XSS vulnerability in the MediaWiki Wikistories extension allows attackers to inject malicious scripts into web pages viewed by other users.","url":"https://insights.sbomify.com/CVE-2026-103438/"}