{"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-2026-35600 exists.","fix":"Upgrade code.vikunja.io/api to 2.3.0 or later.","what":"CVE-2026-35600 is a medium-severity cross-site scripting vulnerability in go-vikunja vikunja, published on 10 Apr 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-2026-35600 and fix it if it is affected.\n\nWhat it is: CVE-2026-35600 is a medium-severity cross-site scripting vulnerability in go-vikunja vikunja, published on 10 Apr 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-2026-35600 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 all versions; fixed in 2.3.0\n- code.vikunja.io/api (Go): affected all versions; fixed in 2.3.0\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-2026-35600/ (Markdown: https://insights.sbomify.com/CVE-2026-35600/index.md)","id":"CVE-2026-35600","markdown":"https://insights.sbomify.com/CVE-2026-35600/index.md","name":"CVE-2026-35600","record":{"aliases":["GHSA-45q4-x4r9-8fqj","GO-2026-5111"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Vikunja task manager","requires_auth":"low_privilege","summary":"Attackers can inject malicious HTML into task titles to create phishing links and tracking pixels in overdue email notifications.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"vikunja","vendor":"vikunja"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, task titles are embedded directly into Markdown link syntax in overdue email notifications without escaping Markdown special characters. When rendered by goldmark and sanitized by bluemonday (which allows \u003ca\u003e and \u003cimg\u003e tags), injected Markdown constructs produce phishing links and tracking pixels in legitimate notification emails. This vulnerability is fixed in 2.3.0.","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 HTML Injection via Task Titles in Overdue Email Notifications","id":"CVE-2026-35600","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Vikunja has an iCalendar Property Injection via CRLF in CalDAV Task Output","id":"CVE-2026-35601"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GO-2026-5111"},{"ecosystem":"Go","fixed":["2.3.0"],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":null,"source":"GHSA-45q4-x4r9-8fqj"},{"ecosystem":"Go","fixed":["2.3.0"],"introduced":["0"],"last_affected":[],"package":"code.vikunja.io/api","purl":"pkg:golang/code.vikunja.io/api","source":"GHSA-45q4-x4r9-8fqj"}],"prev":{"headline":"Vikunja has an Algorithmic Complexity DoS in Repeating Task Handler","id":"CVE-2026-35599"},"products":["vikunja"],"published":"2026-04-10","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":"2026-04-14","vendors":["go-vikunja"]},"summary":"Attackers can inject malicious HTML into task titles to create phishing links and tracking pixels in overdue email notifications.","url":"https://insights.sbomify.com/CVE-2026-35600/"}