{"answers":{"affected":"3 open source packages ship an affected version, including code.vikunja.io/api. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33473 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-33473 is a medium-severity authentication bypass vulnerability in go-vikunja vikunja, published on 24 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-33473 and fix it if it is affected.\n\nWhat it is: CVE-2026-33473 is a medium-severity authentication bypass vulnerability in go-vikunja vikunja, published on 24 Mar 2026. Any signed-in user can exploit it over the network, 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-2026-33473 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; no fix listed\n- code.vikunja.io/api (Go): affected from 0.13; no fix listed\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-2026-33473/ (Markdown: https://insights.sbomify.com/CVE-2026-33473/index.md)","id":"CVE-2026-33473","markdown":"https://insights.sbomify.com/CVE-2026-33473/index.md","name":"CVE-2026-33473","record":{"aliases":["GHSA-p747-qc5p-773r","GO-2026-4805"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Vikunja task manager","requires_auth":"low_privilege","summary":"Attackers can reuse TOTP codes within the validity window to bypass two-factor authentication and take over user accounts.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"vikunja","vendor":"vikunja"}],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"Vikunja is an open-source self-hosted task management platform. Starting in version 0.13 and prior to version 2.2.1, any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window. Version 2.2.1 patches the issue.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Vikunja has TOTP Reuse During Validity Window","id":"CVE-2026-33473","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Vikunja Affected by DoS via Image Preview Generation","id":"CVE-2026-33474"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GO-2026-4805"},{"ecosystem":"Go","fixed":[],"introduced":["0.13"],"last_affected":[],"package":"code.vikunja.io/api","purl":null,"source":"GHSA-p747-qc5p-773r"},{"ecosystem":"Go","fixed":[],"introduced":["0.13"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GHSA-p747-qc5p-773r"}],"prev":{"headline":"Cryptomator Hub OAuth token exchange HTTP downgrade via getAuthority() scheme confusion (CVE-2026-32303 bypass)","id":"CVE-2026-33472"},"products":["vikunja"],"published":"2026-03-24","related":[{"cvss_score":9.8,"headline":"Vikunja Vulnerable to Account Takeover via Password Reset Token Reuse","id":"CVE-2026-28268","kev_date_added":null,"published":"2026-02-27"},{"cvss_score":9.1,"headline":"Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change","id":"CVE-2026-27575","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":8.6,"headline":"Vikunja Affected by XSS Via Task Preview","id":"CVE-2026-25935","kev_date_added":null,"published":"2026-02-11"},{"cvss_score":8.3,"headline":"Vikunja Affected by Privilege Escalation via Project Reparenting","id":"CVE-2026-35595","kev_date_added":null,"published":"2026-04-10"},{"cvss_score":8.1,"headline":"Vikunja’s Improper Access Control Enables Bypass of Administrator-Imposed Account Disablement","id":"CVE-2026-33316","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":8.1,"headline":"Vikunja has IDOR in Task Attachment ReadOne Allows Cross-Project File Access and Deletion","id":"CVE-2026-33678","kev_date_added":null,"published":"2026-03-24"},{"cvss_score":7.5,"headline":"Vikunja Vulnerable to Link Share Hash Disclosure via ReadAll Endpoint Enables Permission Escalation","id":"CVE-2026-33680","kev_date_added":null,"published":"2026-03-24"}],"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":"US public information, NVD API terms","name":"NVD"},{"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":"2026-03-24","vendors":["go-vikunja"]},"summary":"Attackers can reuse TOTP codes within the validity window to bypass two-factor authentication and take over user accounts.","url":"https://insights.sbomify.com/CVE-2026-33473/"}