{"answers":{"affected":"3 open source packages ship an affected version, including code.vikunja.io/api.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111921 exists.","fix":"Upgrade code.vikunja.io/api to 2.7.0 or later.","what":"CVE-2026-111921 is a medium-severity missing authorization vulnerability in go-vikunja vikunja, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-111921 and fix it if it is affected.\n\nWhat it is: CVE-2026-111921 is a medium-severity missing authorization vulnerability in go-vikunja vikunja, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111921 exists.\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 from 0.13.0; fixed in 2.7.0\n- code.vikunja.io/api (Go): affected from 0.13.0; fixed in 2.7.0\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-2026-111921/ (Markdown: https://insights.sbomify.com/CVE-2026-111921/index.md)","id":"CVE-2026-111921","markdown":"https://insights.sbomify.com/CVE-2026-111921/index.md","name":"CVE-2026-111921","record":{"aliases":["GHSA-92qc-qm37-9wr9","GHSA-fmmf-xq98-g327","GO-2026-6730"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Vikunja task manager","requires_auth":"low_privilege","summary":"Project members with Write permission can delete admin-tier link shares, revoking access and invalidating sessions.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Vikunja 0.13.0 before 2.7.0 contains an incorrect authorization vulnerability that allows project members with Write permission to delete admin-tier link shares because the delete permission check reads an unloaded share object. Attackers can send DELETE requests to the v1 or v2 projects shares endpoints with sequential share IDs to revoke admin links and invalidate existing share sessions.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Vikunja 0.13.0 before 2.7.0 Incorrect Authorization in Link Share Deletion","id":"CVE-2026-111921","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Vikunja 2.2.0 before 2.7.0 Permissive CORS Policy Trusting Localhost Origins","id":"CVE-2026-111922"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GO-2026-6730"},{"ecosystem":"Go","fixed":["2.7.0"],"introduced":["0.13.0"],"last_affected":[],"package":"code.vikunja.io/api","purl":null,"source":"GHSA-fmmf-xq98-g327"},{"ecosystem":"Go","fixed":["2.7.0"],"introduced":["0.13.0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GHSA-fmmf-xq98-g327"}],"prev":{"headline":"Vikunja 2.6.0 Broken Access Control via Inherited Project Permissions","id":"CVE-2026-111920"},"products":["vikunja"],"published":"2026-10-17","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-21","vendors":["go-vikunja"]},"summary":"Project members with Write permission can delete admin-tier link shares, revoking access and invalidating sessions.","url":"https://insights.sbomify.com/CVE-2026-111921/"}