{"answers":{"affected":"3 open source packages ship an affected version, including github.com/caddyserver/caddy/v2. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45692 exists.","fix":"Upgrade github.com/caddyserver/caddy/v2 to 2.11.3 or later.","what":"CVE-2026-45692 is a medium-severity authentication bypass vulnerability in caddyserver caddy, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-45692 and fix it if it is affected.\n\nWhat it is: CVE-2026-45692 is a medium-severity authentication bypass vulnerability in caddyserver caddy, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45692 exists.\n\nAffected packages and fixed versions:\n- github.com/caddyserver/caddy/v2 (Go): affected from 2.4.0; fixed in 2.11.3\n- github.com/caddyserver/caddy/v2 (Go): affected from 2.4.0; fixed in 2.11.3\n- github.com/caddyserver/caddy/v2 (Go): affected from 2.4.0; fixed in 2.11.3\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-2026-45692/ (Markdown: https://insights.sbomify.com/CVE-2026-45692/index.md)","id":"CVE-2026-45692","markdown":"https://insights.sbomify.com/CVE-2026-45692/index.md","name":"CVE-2026-45692","record":{"aliases":["CLEANSTART-2026-WK22640","DEBIAN-CVE-2026-45692","GHSA-x5w9-xh9r-mvfc","GO-2026-5743","MINI-ff5f-x2fr-4vxm","MINI-x239-2ffx-m95m","UBUNTU-CVE-2026-45692"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Caddy web server","requires_auth":"low_privilege","summary":"Attackers can bypass authorization checks on the Caddy admin API to modify configuration objects due to inconsistent path parsing between authorization and traversal layers.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"caddy","vendor":"caddyserver"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-187","name":"Partial String Comparison"}],"description":"Caddy is an extensible server platform that uses TLS by default. From 2.4.0 until 2.11.3, the authorization layer and the /config traversal layer do not agree on what object the path refers to. In this case, a path authorized for one config object is accepted, but then resolves to a different config object during traversal. This happens because the authorization layer uses string prefix matching and the /config traversal layer parses array indices numerically using strconv.Atoi(). This vulnerability is fixed in 2.11.3.","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":"Caddy: Remote Admin Authorization Bypass in `/config` API via Array Index Normalization","id":"CVE-2026-45692","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"LibreNMS: Reflected XSS in the Proxmox app view via unsanitized instance/vmid parameters","id":"CVE-2026-45694"},"packages":[{"ecosystem":"Go","fixed":["2.11.3"],"introduced":["2.4.0"],"last_affected":[],"package":"github.com/caddyserver/caddy/v2","purl":null,"source":"GHSA-x5w9-xh9r-mvfc"},{"ecosystem":"Go","fixed":["2.11.3"],"introduced":["2.4.0"],"last_affected":[],"package":"github.com/caddyserver/caddy/v2","purl":"pkg:golang/github.com/caddyserver/caddy/v2","source":"GHSA-x5w9-xh9r-mvfc"},{"ecosystem":"Go","fixed":["2.11.3"],"introduced":["2.4.0"],"last_affected":[],"package":"github.com/caddyserver/caddy/v2","purl":"pkg:golang/github.com/caddyserver/caddy/v2","source":"GO-2026-5743"}],"prev":{"headline":"Nextcloud: Bypass of second factor authentication on DAV endpoints","id":"CVE-2026-45691"},"products":["caddy"],"published":"2026-06-23","related":[{"cvss_score":9.8,"headline":"Caddy vulnerable to Authentication Bypass due to mishandling of TLS client authentication","id":"CVE-2018-21246","kev_date_added":null,"published":"2020-06-15"},{"cvss_score":8.9,"headline":"Caddy: Unicode case-folding length expansion causes incorrect split_path index in FastCGI transport","id":"CVE-2026-27590","kev_date_added":null,"published":"2026-02-24"},{"cvss_score":8.8,"headline":"Caddy's mTLS client authentication silently fails open when CA certificate file is missing or malformed","id":"CVE-2026-27586","kev_date_added":null,"published":"2026-02-24"},{"cvss_score":8.1,"headline":"Caddy: Unsafe Unicode Handling in FastCGI splitPos Allows Execution of Non-PHP Files","id":"CVE-2026-45135","kev_date_added":null,"published":"2026-06-23"},{"cvss_score":8.1,"headline":"Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`","id":"CVE-2026-52845","kev_date_added":null,"published":"2026-06-23"},{"cvss_score":8.1,"headline":"Caddy forward_auth copy_headers Does Not Strip Client-Supplied Headers, Allowing Identity Injection and Privilege Escalation","id":"CVE-2026-30851","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":7.7,"headline":"Caddy: MatchPath %xx (escaped-path) branch skips case normalization, enabling path-based route/auth bypass","id":"CVE-2026-27587","kev_date_added":null,"published":"2026-02-24"}],"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":"2026-06-26","vendors":["caddyserver"]},"summary":"Attackers can bypass authorization checks on the Caddy admin API to modify configuration objects due to inconsistent path parsing between authorization and traversal layers.","url":"https://insights.sbomify.com/CVE-2026-45692/"}