{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-5266 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-5266 is a low-severity vulnerability in Wikimedia Foundation Echo, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5266 and fix it if it is affected.\n\nWhat it is: CVE-2026-5266 is a low-severity vulnerability in Wikimedia Foundation Echo, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-5266 in the wild and no public exploit code.\n\nAffected product: Wikimedia Foundation Echo. 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-2026-5266/ (Markdown: https://insights.sbomify.com/CVE-2026-5266/index.md)","id":"CVE-2026-5266","markdown":"https://insights.sbomify.com/CVE-2026-5266/index.md","name":"CVE-2026-5266","record":{"aliases":["DEBIAN-CVE-2026-5266","GHSA-vmww-wfjj-w6p8","UBUNTU-CVE-2026-5266"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"MediaWiki Echo extension","requires_auth":"low_privilege","summary":"An attacker can access sensitive notification data via the Echo API, exposing private user information to unauthorized actors.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wikimedia-foundation","cpe":[],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Echo.\n\n This vulnerability is associated with program files includes/Api/ApiEchoNotifications.Php.\n\nThis issue affects Echo: 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":"Information disclosure in Echo","id":"CVE-2026-5266","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":"Unauthenticated Event Stream Exposure of Session Tokens in Navigator NCS","id":"CVE-2026-5267"},"packages":[],"prev":{"headline":"Ovn: ovn: heap over-read in icmp error response generation","id":"CVE-2026-5265"},"products":["Echo"],"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":"An attacker can access sensitive notification data via the Echo API, exposing private user information to unauthorized actors.","url":"https://insights.sbomify.com/CVE-2026-5266/"}