{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-34086 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-34086 is a low-severity vulnerability in Wikimedia Foundation AbuseFilter, published on 11 May 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-2026-34086 and fix it if it is affected.\n\nWhat it is: CVE-2026-34086 is a low-severity vulnerability in Wikimedia Foundation AbuseFilter, published on 11 May 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-2026-34086 in the wild and no public exploit code.\n\nAffected product: Wikimedia Foundation AbuseFilter. 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-2026-34086/ (Markdown: https://insights.sbomify.com/CVE-2026-34086/index.md)","id":"CVE-2026-34086","markdown":"https://insights.sbomify.com/CVE-2026-34086/index.md","name":"CVE-2026-34086","record":{"aliases":["DEBIAN-CVE-2026-34086","GHSA-5qc5-wp75-wxgx","UBUNTU-CVE-2026-34086"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki AbuseFilter","requires_auth":"low_privilege","summary":"Attackers can access restricted information due to improper use of user permission checks in the AbuseFilter extension.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":2.1,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/S:N/AU:Y","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Vulnerability in Wikimedia Foundation AbuseFilter.\n\nThis issue affects AbuseFilter: from * before 1.43.7, 1.44.4, 1.45.2.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"AbuseFilter misuses ::userCanBitfield, exposing access-controlled information","id":"CVE-2026-34086","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Users API leaks whether privileged users have their user groups disabled for lack of 2FA","id":"CVE-2026-34087"},"packages":[],"prev":{"headline":"Memory corruption in fontconfig","id":"CVE-2026-34085"},"products":["AbuseFilter"],"published":"2026-05-11","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":"2026-05-11","vendors":["Wikimedia Foundation"]},"summary":"Attackers can access restricted information due to improper use of user permission checks in the AbuseFilter extension.","url":"https://insights.sbomify.com/CVE-2026-34086/"}