{"answers":{"affected":"2 open source packages ship an affected version, including yeswiki/yeswiki.","exploited":"There is no known exploitation of CVE-2026-52777 in the wild and no public exploit code.","fix":"Upgrade yeswiki/yeswiki to 4.6.6 or later.","what":"CVE-2026-52777 is a critical unsafe deserialization 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-2026-52777 and fix it if it is affected.\n\nWhat it is: CVE-2026-52777 is a critical unsafe deserialization 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: There is no known exploitation of CVE-2026-52777 in the wild and no public exploit code.\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-2026-52777/ (Markdown: https://insights.sbomify.com/CVE-2026-52777/index.md)","id":"CVE-2026-52777","markdown":"https://insights.sbomify.com/CVE-2026-52777/index.md","name":"CVE-2026-52777","record":{"aliases":["GHSA-9369-69wj-7m2f"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"YesWiki","requires_auth":"none","summary":"Authenticated attackers can achieve code execution in YesWiki via unsafe deserialization in the BazarImportAction component.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"},{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"YesWiki is a wiki system written in PHP. Prior to version 4.6.6, there is an authenticated PHP object injection vulnerability in BazarImportAction via unserialize. This issue has been patched in version 4.6.6.","ecosystems":["Packagist"],"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":"YesWiki: Authenticated PHP Object Injection in BazarImportAction via unserialize","id":"CVE-2026-52777","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"YesWiki has Unsafe eval() in Formula Calculator - Remote Code Execution (RCE) \u0026 Denial of Service (DoS)","id":"CVE-2026-52778"},"packages":[{"ecosystem":"Packagist","fixed":["4.6.6"],"introduced":["0"],"last_affected":[],"package":"yeswiki/yeswiki","purl":null,"source":"GHSA-9369-69wj-7m2f"},{"ecosystem":"Packagist","fixed":["4.6.6"],"introduced":["0"],"last_affected":[],"package":"yeswiki/yeswiki","purl":"pkg:composer/yeswiki/yeswiki","source":"GHSA-9369-69wj-7m2f"}],"prev":{"headline":"Trestle URLSecurityValidator SSRF allowlist bypass via IPv4-mapped IPv6 and 0.0.0.0","id":"CVE-2026-52776"},"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)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-08","vendors":["YesWiki"]},"summary":"Authenticated attackers can achieve code execution in YesWiki via unsafe deserialization in the BazarImportAction component.","url":"https://insights.sbomify.com/CVE-2026-52777/"}