{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-103441 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-103441 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-103441 is a high-severity unsafe deserialization vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension, published on 30 Sep 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-2026-103441 and fix it if it is affected.\n\nWhat it is: CVE-2026-103441 is a high-severity unsafe deserialization vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension, published on 30 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-103441 in the wild and no public exploit code.\n\nAffected product: The Wikimedia Foundation MediaWiki Wikibase 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-2026-103441/ (Markdown: https://insights.sbomify.com/CVE-2026-103441/index.md)","id":"CVE-2026-103441","markdown":"https://insights.sbomify.com/CVE-2026-103441/index.md","name":"CVE-2026-103441","record":{"aliases":["GHSA-5j2p-pvv3-qxhp"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki Wikibase extension","requires_auth":"low_privilege","summary":"Unauthenticated attackers can execute arbitrary code or delete files via unsafe deserialization in the Wikibase extension.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:I/V:C/RE:M/U:Red","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Deserialization of untrusted data vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension allows Leverage Executable Code in Non-Executable Files.\n\nThis issue affects MediaWiki Wikibase extension: 1.46, 1.45, and 1.43.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-30","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-30T18:34:08Z","kind":"github_poc","ref":"https://github.com/BomboBombone/CVE-2026-103441","stars":0,"title":"Sanitized report summary and local PoC for CVE-2026-103441"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Unauthenticated arbitrary file deletion through Wikibase serialized entity parsing","id":"CVE-2026-103441","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"MergeAccount PHP object injection via session-key substitution","id":"CVE-2026-103442"},"packages":[],"prev":{"headline":"pagetriagelist discloses suppressed reviewer usernames","id":"CVE-2026-103440"},"products":["MediaWiki Wikibase 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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-09-30","vendors":["The Wikimedia Foundation"]},"summary":"Unauthenticated attackers can execute arbitrary code or delete files via unsafe deserialization in the Wikibase extension.","url":"https://insights.sbomify.com/CVE-2026-103441/"}