{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-103050 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-103050 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-103050 is a medium-severity cross-site scripting vulnerability in The Wikimedia Foundation Mediawiki - MassMessage extension, published on 29 Sep 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-2026-103050 and fix it if it is affected.\n\nWhat it is: CVE-2026-103050 is a medium-severity cross-site scripting vulnerability in The Wikimedia Foundation Mediawiki - MassMessage extension, published on 29 Sep 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: There is no known exploitation of CVE-2026-103050 in the wild and no public exploit code.\n\nAffected product: The Wikimedia Foundation Mediawiki - MassMessage 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-2026-103050/ (Markdown: https://insights.sbomify.com/CVE-2026-103050/index.md)","id":"CVE-2026-103050","markdown":"https://insights.sbomify.com/CVE-2026-103050/index.md","name":"CVE-2026-103050","record":{"aliases":["GHSA-9j6w-3g83-7xg8","UBUNTU-CVE-2026-103050"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki MassMessage extension","requires_auth":"none","summary":"Attackers can inject malicious scripts into MassMessage pages, potentially stealing user sessions or executing code in victim browsers.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":6.1,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - MassMessage extension allows Stored XSS.\n\nThis issue affects Mediawiki - MassMessage extension: before 1.46.1, 1.45.5, 1.43.10.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Stored i18n XSS in MassMessage","id":"CVE-2026-103050","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Stored i18n XSSs in CentralNotice","id":"CVE-2026-103051"},"packages":[],"prev":{"headline":"XSS in Cargo's Special:CargoQuery page due to unsanitized table headers","id":"CVE-2026-103049"},"products":["Mediawiki - MassMessage extension"],"published":"2026-09-29","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":"Attackers can inject malicious scripts into MassMessage pages, potentially stealing user sessions or executing code in victim browsers.","url":"https://insights.sbomify.com/CVE-2026-103050/"}