{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-100383 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-100383 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-100383 is a medium-severity cross-site scripting vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension, published on 25 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-100383 and fix it if it is affected.\n\nWhat it is: CVE-2026-100383 is a medium-severity cross-site scripting vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension, published on 25 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-100383 in the wild and no public exploit code.\n\nAffected product: Wikimedia Foundation Mediawiki - WikiLambda 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-2026-100383/ (Markdown: https://insights.sbomify.com/CVE-2026-100383/index.md)","id":"CVE-2026-100383","markdown":"https://insights.sbomify.com/CVE-2026-100383/index.md","name":"CVE-2026-100383","record":{"aliases":["GHSA-45r6-8hjm-wh6p"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki WikiLambda Extension","requires_auth":"high_privilege","summary":"Stored XSS in WikiLambda's VisualEditor allows attackers to inject scripts, potentially compromising user sessions and data integrity.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - WikiLambda Extension allows Cross-Site Scripting (XSS).\n\nThis issue affects Mediawiki - WikiLambda Extension: 1.47.0-alpha. The issue has been remediated on the `master` branch.","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":"Stored i18n XSS in WikiLambda's VisualEditor integration","id":"CVE-2026-100383","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"pgPointcloud through 1.2.5 heap out-of-bounds read via WKB deserialization","id":"CVE-2026-100387"},"packages":[],"prev":{"headline":"Unauthenticated remote code execution through wikitext in ExternalData","id":"CVE-2026-100382"},"products":["Mediawiki - WikiLambda Extension"],"published":"2026-09-25","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":"2026-09-26","vendors":["Wikimedia Foundation"]},"summary":"Stored XSS in WikiLambda's VisualEditor allows attackers to inject scripts, potentially compromising user sessions and data integrity.","url":"https://insights.sbomify.com/CVE-2026-100383/"}