{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-39937 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-39937 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-39937 is a high-severity vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-39937 and fix it if it is affected.\n\nWhat it is: CVE-2026-39937 is a high-severity vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-39937 in the wild and no public exploit code.\n\nAffected product: The Wikimedia Foundation Mediawiki - CentralAuth 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-2026-39937/ (Markdown: https://insights.sbomify.com/CVE-2026-39937/index.md)","id":"CVE-2026-39937","markdown":"https://insights.sbomify.com/CVE-2026-39937/index.md","name":"CVE-2026-39937","record":{"aliases":["GHSA-86vf-rp56-mhf8"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki CentralAuth Extension","requires_auth":"none","summary":"Attackers can recover user email addresses that were supposed to be removed during global account vanishing, exposing sensitive personal data.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-212","name":"Improper Removal of Sensitive Information Before Storage or Transfer"}],"description":"Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.","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":"Global vanishing does not completely remove user email","id":"CVE-2026-39937","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Cacti: Unauthenticated RCE on Graph Image","id":"CVE-2026-39938"},"packages":[],"prev":{"headline":"Stored XSS in Score due to usage of non-reserved data attributes","id":"CVE-2026-39936"},"products":["Mediawiki - CentralAuth Extension"],"published":"2026-04-07","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-08","vendors":["The Wikimedia Foundation"]},"summary":"Attackers can recover user email addresses that were supposed to be removed during global account vanishing, exposing sensitive personal data.","url":"https://insights.sbomify.com/CVE-2026-39937/"}