{"answers":{"affected":"3 open source packages ship an affected version, including github.com/lin-snow/ech0.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79659 exists.","fix":"Upgrade github.com/lin-snow/ech0 to 1.4.8-0.20260503040602-091d26d2d942 or later.","what":"CVE-2026-79659 is a high-severity server-side request forgery vulnerability in lin-snow Ech0, published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-79659 and fix it if it is affected.\n\nWhat it is: CVE-2026-79659 is a high-severity server-side request forgery vulnerability in lin-snow Ech0, published on 25 Aug 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-2026-79659 exists.\n\nAffected packages and fixed versions:\n- github.com/lin-snow/ech0 (Go): affected all versions; fixed in 1.4.8-0.20260503040602-091d26d2d942\n- github.com/lin-snow/ech0 (Go): affected all versions; fixed in 1.4.8-0.20260503040602-091d26d2d942\n- github.com/lin-snow/ech0 (Go): affected all versions; fixed in 1.4.8-0.20260503040602-091d26d2d942\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-2026-79659/ (Markdown: https://insights.sbomify.com/CVE-2026-79659/index.md)","id":"CVE-2026-79659","markdown":"https://insights.sbomify.com/CVE-2026-79659/index.md","name":"CVE-2026-79659","record":{"aliases":["GHSA-8mc6-xjpr-h98x","GHSA-9g26-825h-8v6p","GO-2026-5259"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Ech0 server software","requires_auth":"low_privilege","summary":"Authenticated attackers can exploit Ech0 to access internal services and cloud metadata via unvalidated URLs in peer connection operations.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.3,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Ech0 before 4.7.3 contains a server-side request forgery vulnerability in the fetchPeerConnectInfo function that uses unvalidated HTTP requests instead of safe request methods with URL validation. Authenticated attackers can supply arbitrary URLs to access internal services and cloud metadata endpoints by triggering connection health checks or peer connection operations.","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":"Ech0 before 4.7.3 Server-Side Request Forgery via fetchPeerConnectInfo","id":"CVE-2026-79659","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Ech0 before 4.7.3 Email Disclosure via Public API","id":"CVE-2026-79660"},"packages":[{"ecosystem":"Go","fixed":["1.4.8-0.20260503040602-091d26d2d942"],"introduced":["0"],"last_affected":[],"package":"github.com/lin-snow/ech0","purl":null,"source":"GHSA-8mc6-xjpr-h98x"},{"ecosystem":"Go","fixed":["1.4.8-0.20260503040602-091d26d2d942"],"introduced":["0"],"last_affected":[],"package":"github.com/lin-snow/ech0","purl":"pkg:golang/github.com/lin-snow/ech0","source":"GHSA-8mc6-xjpr-h98x"},{"ecosystem":"Go","fixed":["1.4.8-0.20260503040602-091d26d2d942"],"introduced":["0"],"last_affected":[],"package":"github.com/lin-snow/ech0","purl":"pkg:golang/github.com/lin-snow/ech0","source":"GO-2026-5259"}],"prev":{"headline":"Ech0 before 5.0.1 Denial of Service via Accept-Language","id":"CVE-2026-79658"},"products":["Ech0"],"published":"2026-08-25","related":[],"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":"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":"2026-10-08","vendors":["lin-snow"]},"summary":"Authenticated attackers can exploit Ech0 to access internal services and cloud metadata via unvalidated URLs in peer connection operations.","url":"https://insights.sbomify.com/CVE-2026-79659/"}