{"answers":{"affected":"5 open source packages ship an affected version, including github.com/zitadel/zitadel. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-23511 in the wild and no public exploit code.","fix":"Upgrade github.com/zitadel/zitadel to a fixed version for your release line: 3.4.6 or 4.9.1.","what":"CVE-2026-23511 is a medium-severity vulnerability in zitadel, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-23511 and fix it if it is affected.\n\nWhat it is: CVE-2026-23511 is a medium-severity vulnerability in zitadel, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-23511 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/zitadel/zitadel (Go): affected all versions; no fix listed\n- github.com/zitadel/zitadel (Go): affected all versions; fixed in 3.4.6\n- github.com/zitadel/zitadel (Go): affected all versions; fixed in 3.4.6\n- github.com/zitadel/zitadel (Go): affected from 4.0.0; fixed in 4.9.1\n- github.com/zitadel/zitadel (Go): affected from 4.0.0; fixed in 4.9.1\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-2026-23511/ (Markdown: https://insights.sbomify.com/CVE-2026-23511/index.md)","id":"CVE-2026-23511","markdown":"https://insights.sbomify.com/CVE-2026-23511/index.md","name":"CVE-2026-23511","record":{"aliases":["GHSA-pvm5-9frx-264r","GO-2026-4319"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Identity management platform","requires_auth":"none","summary":"Unauthenticated attackers can enumerate valid user accounts in ZITADEL login interfaces by iterating through usernames and IDs.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"zitadel","vendor":"zitadel"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-204","name":"Observable Response Discrepancy"}],"description":"ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login interfaces. An unauthenticated attacker can exploit this flaw to confirm the existence of valid user accounts by iterating through usernames and userIDs. This vulnerability is fixed in 4.9.1 and 3.4.6.","ecosystems":["Go"],"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":"ZITADEL has a user enumeration vulnerability in Login UIs","id":"CVE-2026-23511","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":5,"n_references":5,"next":{"headline":"SumatraPDF has an Untrusted Search Path in sumatrapdf/src/AppTools.cpp","id":"CVE-2026-23512"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","source":"GO-2026-4319"},{"ecosystem":"Go","fixed":["3.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/zitadel/zitadel","purl":null,"source":"GHSA-pvm5-9frx-264r"},{"ecosystem":"Go","fixed":["3.4.6"],"introduced":["0"],"last_affected":[],"package":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","source":"GHSA-pvm5-9frx-264r"},{"ecosystem":"Go","fixed":["4.9.1"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/zitadel/zitadel","purl":null,"source":"GHSA-pvm5-9frx-264r"},{"ecosystem":"Go","fixed":["4.9.1"],"introduced":["4.0.0"],"last_affected":[],"package":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","source":"GHSA-pvm5-9frx-264r"}],"prev":{"headline":"Command injection in RecoverPoint for Virtual Machines","id":"CVE-2026-23501"},"products":["zitadel"],"published":"2026-01-15","related":[{"cvss_score":9.3,"headline":"ZITADEL: 1-Click Account Takeover via XSS in /saml-post Endpoint","id":"CVE-2026-29191","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":9.3,"headline":"ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login","id":"CVE-2025-67494","kev_date_added":null,"published":"2025-12-09"},{"cvss_score":9,"headline":"IDOR Vulnerabilities in ZITADEL's Admin API that Primarily Impact LDAP Configurations","id":"CVE-2025-27507","kev_date_added":null,"published":"2025-03-04"},{"cvss_score":8.7,"headline":"Zitadel Bypass Second Authentication Factor","id":"CVE-2025-64103","kev_date_added":null,"published":"2025-10-29"},{"cvss_score":8.7,"headline":"Zitadel Expired JWT Keys Usable for Authorization Grants","id":"CVE-2025-31123","kev_date_added":null,"published":"2025-03-31"},{"cvss_score":8.7,"headline":"ZITADEL Improper Content-Type Validation Leads to Account Takeover via Stored XSS + CSP Bypass","id":"CVE-2024-29891","kev_date_added":null,"published":"2024-03-27"},{"cvss_score":8.7,"headline":"XSS with User Avatar image in ZITADEL","id":"CVE-2023-46238","kev_date_added":null,"published":"2023-10-26"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-15","vendors":["zitadel"]},"summary":"Unauthenticated attackers can enumerate valid user accounts in ZITADEL login interfaces by iterating through usernames and IDs.","url":"https://insights.sbomify.com/CVE-2026-23511/"}