{"answers":{"affected":"3 open source packages ship an affected version, including github.com/greenpau/caddy-security. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-21494 exists.","fix":"No fix has been published for CVE-2024-21494 yet. Limit exposure of the affected software until one is available.","what":"CVE-2024-21494 is a medium-severity authentication bypass vulnerability in github.com/greenpau/caddy-security, published on 17 Feb 2024. 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-2024-21494 and fix it if it is affected.\n\nWhat it is: CVE-2024-21494 is a medium-severity authentication bypass vulnerability in github.com/greenpau/caddy-security, published on 17 Feb 2024. An attacker can exploit it over the internet without logging in, 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-2024-21494 exists.\n\nAffected packages and fixed versions:\n- github.com/greenpau/caddy-security (Go): affected all versions; no fix listed\n- github.com/greenpau/caddy-security (Go): affected all versions up to 1.1.23; no fix listed\n- github.com/greenpau/caddy-security (Go): affected all versions up to 1.1.23; 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-2024-21494/ (Markdown: https://insights.sbomify.com/CVE-2024-21494/index.md)","id":"CVE-2024-21494","markdown":"https://insights.sbomify.com/CVE-2024-21494/index.md","name":"CVE-2024-21494","record":{"aliases":["GHSA-vj36-3ccr-6563","GO-2024-2558"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Caddy security plugin","requires_auth":"none","summary":"Attackers can bypass authentication by spoofing IP addresses via the X-Forwarded-For header in the Caddy security plugin.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"caddy-security","vendor":"greenpau"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"},{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"All versions of the package github.com/greenpau/caddy-security are vulnerable to Authentication Bypass by Spoofing via the X-Forwarded-For header due to improper input sanitization. An attacker can spoof an IP address used in the user identity module (/whoami API endpoint). This could lead to unauthorized access if the system trusts this spoofed IP address.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Authentication Bypass by Spoofing in github.com/greenpau/caddy-security","id":"CVE-2024-21494","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"auth_bypass","year":"2024"},"n_packages":3,"n_references":3,"next":{"headline":"Use of Insufficiently Random Values in github.com/greenpau/caddy-security","id":"CVE-2024-21495"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/greenpau/caddy-security","purl":"pkg:golang/github.com/greenpau/caddy-security","source":"GO-2024-2558"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.1.23"],"package":"github.com/greenpau/caddy-security","purl":null,"source":"GHSA-vj36-3ccr-6563"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["1.1.23"],"package":"github.com/greenpau/caddy-security","purl":"pkg:golang/github.com/greenpau/caddy-security","source":"GHSA-vj36-3ccr-6563"}],"prev":{"headline":"Improper Validation of Array Index in github.com/greenpau/caddy-security","id":"CVE-2024-21493"},"products":["github.com/greenpau/caddy-security"],"published":"2024-02-17","related":[{"cvss_score":6.5,"headline":"Use of Insufficiently Random Values in github.com/greenpau/caddy-security","id":"CVE-2024-21495","kev_date_added":null,"published":"2024-02-17"},{"cvss_score":5.4,"headline":"Open Redirect in github.com/greenpau/caddy-security","id":"CVE-2024-21497","kev_date_added":null,"published":"2024-02-17"},{"cvss_score":5.3,"headline":"Improper Validation of Array Index in github.com/greenpau/caddy-security","id":"CVE-2024-21493","kev_date_added":null,"published":"2024-02-17"},{"cvss_score":4.3,"headline":"Improper Neutralization of HTTP Headers in github.com/greenpau/caddy-security","id":"CVE-2024-21499","kev_date_added":null,"published":"2024-02-17"}],"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":"2025-04-24","vendors":["n/a"]},"summary":"Attackers can bypass authentication by spoofing IP addresses via the X-Forwarded-For header in the Caddy security plugin.","url":"https://insights.sbomify.com/CVE-2024-21494/"}