{"answers":{"affected":"1 open source package ship an affected version, including authentik. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-42849 in the wild and no public exploit code.","fix":"Upgrade authentik to a fixed version for your release line: 2025.12.5 or 2026.2.3.","what":"CVE-2026-42849 is a critical cross-site scripting vulnerability in goauthentik authentik, published on 2 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-42849 and fix it if it is affected.\n\nWhat it is: CVE-2026-42849 is a critical cross-site scripting vulnerability in goauthentik authentik, published on 2 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-42849 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- authentik (Bitnami): affected all versions; fixed in 2025.12.5, 2026.2.3\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-2026-42849/ (Markdown: https://insights.sbomify.com/CVE-2026-42849/index.md)","id":"CVE-2026-42849","markdown":"https://insights.sbomify.com/CVE-2026-42849/index.md","name":"CVE-2026-42849","record":{"aliases":["BIT-authentik-2026-42849","GHSA-pgff-5mx8-fqj3"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Identity provider","requires_auth":"none","summary":"Reflected XSS in authentik's SFE AutosubmitStage allows attackers to hijack identity provider accounts.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"authentik","vendor":"goauthentik"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, due to the implementation of stages in the SFE (Simple Flow Executor) in order to make the interface more compatible with legacy browsers, it was possible to use an XSS exploit in the AutosubmitStage. This issue has been patched in versions 2025.12.5 and 2026.2.3.","ecosystems":["Bitnami"],"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":"authentik: Reflected XSS in SFE AutosubmitStage allows IDP account takeover","id":"CVE-2026-42849","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"Kitty has a shell command injection","id":"CVE-2026-42850"},"packages":[{"ecosystem":"Bitnami","fixed":["2025.12.5","2026.2.3"],"introduced":["0","2026.0.0"],"last_affected":[],"package":"authentik","purl":"pkg:bitnami/authentik","source":"BIT-authentik-2026-42849"}],"prev":{"headline":"ClipBucket: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","id":"CVE-2026-42847"},"products":["authentik"],"published":"2026-06-02","related":[{"cvss_score":9.8,"headline":"authentik: SourceStage bypass via empty POST","id":"CVE-2026-49448","kev_date_added":null,"published":"2026-06-02"},{"cvss_score":9.7,"headline":"authentik potential installation takeover when default admin user is deleted","id":"CVE-2023-46249","kev_date_added":null,"published":"2023-10-31"},{"cvss_score":9.4,"headline":"authentik vulnerable to Improper Authentication via invitation URL token reuse","id":"CVE-2022-23555","kev_date_added":null,"published":"2022-12-28"},{"cvss_score":9.1,"headline":"authentik affected by Remote Code Execution via Context Key Injection in PropertyMapping Test Endpoint","id":"CVE-2026-25227","kev_date_added":null,"published":"2026-02-12"},{"cvss_score":9.1,"headline":"authentik vulnerable to password authentication bypass via X-Forwarded-For HTTP header","id":"CVE-2024-47070","kev_date_added":null,"published":"2024-09-27"},{"cvss_score":9.1,"headline":"Insufficient user check in FlowTokens by Email stage","id":"CVE-2023-26481","kev_date_added":null,"published":"2023-03-04"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-03","vendors":["goauthentik"]},"summary":"Reflected XSS in authentik's SFE AutosubmitStage allows attackers to hijack identity provider accounts.","url":"https://insights.sbomify.com/CVE-2026-42849/"}