{"answers":{"affected":"2 open source packages ship an affected version, including yeswiki/yeswiki.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52774 exists.","fix":"Upgrade yeswiki/yeswiki to 4.6.6 or later.","what":"CVE-2026-52774 is a medium-severity cross-site scripting vulnerability in yeswiki, published on 4 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-2026-52774 and fix it if it is affected.\n\nWhat it is: CVE-2026-52774 is a medium-severity cross-site scripting vulnerability in yeswiki, published on 4 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52774 exists.\n\nAffected packages and fixed versions:\n- yeswiki/yeswiki (Packagist): affected all versions; fixed in 4.6.6\n- yeswiki/yeswiki (Packagist): affected all versions; fixed in 4.6.6\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-2026-52774/ (Markdown: https://insights.sbomify.com/CVE-2026-52774/index.md)","id":"CVE-2026-52774","markdown":"https://insights.sbomify.com/CVE-2026-52774/index.md","name":"CVE-2026-52774","record":{"aliases":["GHSA-r5xw-gcgw-hwp5"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"YesWiki wiki system","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in victims' browsers via reflected XSS in the Bazar widget, requiring the extension to be enabled.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.1,"severity":"medium","source":"cna","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-80","name":"Improper Neutralization of Script-Related HTML Tags in a Web Page"}],"description":"YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki's Bazar widget handler reflects the id GET parameter into HTML attributes using strip_tags() only. Because strip_tags() does not escape double quotes, an attacker can break out of the attribute value, inject an event handler such as onmouseover, and execute arbitrary JavaScript in the victim's browser. This issue is reachable without authentication. During validation, the vulnerable widget route returned the injected HTML for both /HomePage/widget?id=... and /NoSuchPage/widget?id=..., which shows that no login, no page ownership, no edit rights, and not even a valid page tag were required. The only routing prerequisite observed was that the Bazar extension is enabled and the request includes an id parameter. This issue has been patched in version 4.6.6.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":"2026-09-05","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-09-05T17:17:24Z","kind":"github_poc","ref":"https://github.com/0xTerror/CVE-2026-52774-YESWIKI-XSS","stars":1,"title":"a reflected XSS vulnerability in YesWiki's Bazar widget handler."},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-52774.yaml","stars":null,"title":"YesWiki Bazar Widget - Reflected XSS via 'id' Parameter"}],"tier":"weaponised"},"has_fix":true,"headline":"Reflected XSS via Unescaped `id` Parameter in Bazar Widget HTML Attributes in YesWiki","id":"CVE-2026-52774","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"YesWiki Authenticated SQL Injection in ReactionManager","id":"CVE-2026-52775"},"packages":[{"ecosystem":"Packagist","fixed":["4.6.6"],"introduced":["0"],"last_affected":[],"package":"yeswiki/yeswiki","purl":null,"source":"GHSA-r5xw-gcgw-hwp5"},{"ecosystem":"Packagist","fixed":["4.6.6"],"introduced":["0"],"last_affected":[],"package":"yeswiki/yeswiki","purl":"pkg:composer/yeswiki/yeswiki","source":"GHSA-r5xw-gcgw-hwp5"}],"prev":{"headline":"Reflected XSS via Unescaped Archived-Revision `time` Parameter in `handlers/page/show.php` in YesWiki","id":"CVE-2026-52773"},"products":["yeswiki"],"published":"2026-09-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-08","vendors":["YesWiki"]},"summary":"Attackers can execute arbitrary JavaScript in victims' browsers via reflected XSS in the Bazar widget, requiring the extension to be enabled.","url":"https://insights.sbomify.com/CVE-2026-52774/"}