{"answers":{"affected":"3 open source packages ship an affected version, including code.vikunja.io/api.","exploited":"There is no known exploitation of CVE-2026-76216 in the wild and no public exploit code.","fix":"Upgrade code.vikunja.io/api to 2.5.0 or later.","what":"CVE-2026-76216 is a high-severity authentication bypass vulnerability in go-vikunja vikunja, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-76216 and fix it if it is affected.\n\nWhat it is: CVE-2026-76216 is a high-severity authentication bypass vulnerability in go-vikunja vikunja, published on 19 Aug 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-2026-76216 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- code.vikunja.io/api (Go): affected all versions; no fix listed\n- code.vikunja.io/api (Go): affected all versions; fixed in 2.5.0\n- code.vikunja.io/api (Go): affected all versions; fixed in 2.5.0\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-2026-76216/ (Markdown: https://insights.sbomify.com/CVE-2026-76216/index.md)","id":"CVE-2026-76216","markdown":"https://insights.sbomify.com/CVE-2026-76216/index.md","name":"CVE-2026-76216","record":{"aliases":["GHSA-32r8-5843-4qw2","GO-2026-6711"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Vikunja task manager","requires_auth":"low_privilege","summary":"Attackers with link-share JWTs can exploit ID collisions to remove team members, delete bots, or read rosters in Vikunja.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing principals with id N are treated as user principals with users.id == N at three permission checks lacking type guards. Attackers with a link-share JWT can remove victims from teams, enumerate and delete victim bot users, or read team rosters by exploiting id collisions in the autoincrement space.","ecosystems":["Go"],"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":"Vikunja through 2.4.0 Principal-Type Confusion via LinkSharing","id":"CVE-2026-76216","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"GitPython before 3.1.58 Arbitrary File Read via pathspec-from-file","id":"CVE-2026-76217"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GO-2026-6711"},{"ecosystem":"Go","fixed":["2.5.0"],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":null,"source":"GHSA-32r8-5843-4qw2"},{"ecosystem":"Go","fixed":["2.5.0"],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GHSA-32r8-5843-4qw2"}],"prev":{"headline":"phpMyFAQ before 4.1.7 Missing Authorization via child resources","id":"CVE-2026-76215"},"products":["vikunja"],"published":"2026-08-19","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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"total"},"state":"PUBLISHED","updated":"2026-08-20","vendors":["go-vikunja"]},"summary":"Attackers with link-share JWTs can exploit ID collisions to remove team members, delete bots, or read rosters in Vikunja.","url":"https://insights.sbomify.com/CVE-2026-76216/"}