{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-123493 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-123493 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-123493 is a medium-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-123493 and fix it if it is affected.\n\nWhat it is: CVE-2026-123493 is a medium-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-123493 in the wild and no public exploit code.\n\nAffected product: go-vikunja vikunja. 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-2026-123493/ (Markdown: https://insights.sbomify.com/CVE-2026-123493/index.md)","id":"CVE-2026-123493","markdown":"https://insights.sbomify.com/CVE-2026-123493/index.md","name":"CVE-2026-123493","record":{"aliases":["GHSA-5fc2-w2j4-6r8w","GHSA-9j2r-8c48-g92c"],"analysis":null,"analysis_generated_by":null,"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:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-613","name":"DEPRECATED: Insufficient Session Expiration"}],"description":"Vikunja from 2.4.0 before 2.7.1 contains an authentication bypass vulnerability that allows disabled or locked users to retain access through API tokens owned by their bot users. Because token validation only checks the bot's own status, attackers holding pre-minted bot tokens can keep reading and modifying shared projects via the HTTP API, CalDAV, MCP and feeds.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Vikunja from 2.4.0 before 2.7.1 Authentication Bypass via Bot API Tokens","id":"CVE-2026-123493","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Vikunja before 2.7.1 Login CSRF via Migration OAuth Callbacks","id":"CVE-2026-123494"},"nickname":null,"packages":[],"prev":{"headline":"SiYuan before 3.8.9 Nil Pointer Dereference DoS via MCP resources/read","id":"CVE-2026-123492"},"products":["vikunja"],"published":"2026-11-08","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":"2026-11-10","vendors":["go-vikunja"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-123493/"}