{"answers":{"affected":"3 open source packages ship an affected version, including github.com/xyproto/algernon.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46430 exists.","fix":"Upgrade github.com/xyproto/algernon to 1.17.7 or later.","what":"CVE-2026-46430 is a medium-severity vulnerability in xyproto algernon, published on 26 May 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-46430 and fix it if it is affected.\n\nWhat it is: CVE-2026-46430 is a medium-severity vulnerability in xyproto algernon, published on 26 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46430 exists.\n\nAffected packages and fixed versions:\n- github.com/xyproto/algernon (Go): affected all versions; fixed in 1.17.7\n- github.com/xyproto/algernon (Go): affected all versions; fixed in 1.17.7\n- github.com/xyproto/algernon (Go): affected all versions; fixed in 1.17.7\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-2026-46430/ (Markdown: https://insights.sbomify.com/CVE-2026-46430/index.md)","id":"CVE-2026-46430","markdown":"https://insights.sbomify.com/CVE-2026-46430/index.md","name":"CVE-2026-46430","record":{"aliases":["GHSA-gj84-924c-48fx","GO-2026-5401"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Go web server","requires_auth":"none","summary":"Algernon web server exposes its SSE event server on all network interfaces by default, allowing unauthorized access to event streams.","user_interaction":"not_required","vuln_class":"misconfiguration"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-668","name":"Exposure of Resource to Wrong Sphere"},{"id":"CWE-1188","name":"Initialization of a Resource with an Insecure Default"}],"description":"Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server bound to 0.0.0.0:5553 on Linux/macOS by default because the platform-dependent host default in engine/flags.go:39-46 set host = \"\" for non-Windows, and utils.JoinHostPort(\"\", \":5553\") resolves to \":5553\". This vulnerability is fixed in 1.17.7.","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":"Algernon: Auto-refresh SSE event server binds to all interfaces by default on Linux/macOS","id":"CVE-2026-46430","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"misconfiguration","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"Algernon: Auto-refresh SSE event server sets Access-Control-Allow-Origin: *","id":"CVE-2026-46431"},"packages":[{"ecosystem":"Go","fixed":["1.17.7"],"introduced":["0"],"last_affected":[],"package":"github.com/xyproto/algernon","purl":null,"source":"GHSA-gj84-924c-48fx"},{"ecosystem":"Go","fixed":["1.17.7"],"introduced":["0"],"last_affected":[],"package":"github.com/xyproto/algernon","purl":"pkg:golang/github.com/xyproto/algernon","source":"GHSA-gj84-924c-48fx"},{"ecosystem":"Go","fixed":["1.17.7"],"introduced":["0"],"last_affected":[],"package":"github.com/xyproto/algernon","purl":"pkg:golang/github.com/xyproto/algernon","source":"GO-2026-5401"}],"prev":{"headline":"lettre has TLS hostname verification disabled when using Boring TLS backend","id":"CVE-2026-46428"},"products":["algernon"],"published":"2026-05-26","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":"2026-05-26","vendors":["xyproto"]},"summary":"Algernon web server exposes its SSE event server on all network interfaces by default, allowing unauthorized access to event streams.","url":"https://insights.sbomify.com/CVE-2026-46430/"}