{"answers":{"affected":"3 open source packages ship an affected version, including github.com/tinyauthapp/tinyauth.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77582 exists.","fix":"Upgrade github.com/tinyauthapp/tinyauth to 1.0.1-0.20260714134959-c22925c2fba9 or later.","what":"CVE-2026-77582 is a medium-severity vulnerability in tinyauthapp tinyauth, published on 21 Sep 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-2026-77582 and fix it if it is affected.\n\nWhat it is: CVE-2026-77582 is a medium-severity vulnerability in tinyauthapp tinyauth, published on 21 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-77582 exists.\n\nAffected packages and fixed versions:\n- github.com/tinyauthapp/tinyauth (Go): affected all versions; fixed in 1.0.1-0.20260714134959-c22925c2fba9\n- github.com/tinyauthapp/tinyauth (Go): affected all versions; fixed in 1.0.1-0.20260714134959-c22925c2fba9\n- github.com/tinyauthapp/tinyauth (Go): affected all versions; fixed in 1.0.1-0.20260714134959-c22925c2fba9\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-2026-77582/ (Markdown: https://insights.sbomify.com/CVE-2026-77582/index.md)","id":"CVE-2026-77582","markdown":"https://insights.sbomify.com/CVE-2026-77582/index.md","name":"CVE-2026-77582","record":{"aliases":["GHSA-456h-ww26-f758","GO-2026-6555"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Authentication server","requires_auth":"none","summary":"Attackers can enumerate valid usernames via timing differences, facilitating targeted credential attacks against Tinyauth authentication server.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-208","name":"Observable Timing Discrepancy"}],"description":"Tinyauth is an authentication and authorization server. Prior to 5.1.0, Tinyauth exposes a remotely observable timing difference between authentication attempts for existing and nonexistent local usernames. internal/controller/user_controller.go loginHandler and internal/middleware/context_middleware.go basicAuth return quickly after internal/service/auth_service.go reports a missing user, while an existing user causes bcrypt password verification work. Repeated measurements can therefore disclose valid usernames and support targeted credential attacks. This issue is fixed in version 5.1.0.","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":"Tinyauth: User enumeration attack by timing oracle","id":"CVE-2026-77582","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Use after free in Tor","id":"CVE-2026-77584"},"packages":[{"ecosystem":"Go","fixed":["1.0.1-0.20260714134959-c22925c2fba9"],"introduced":["0"],"last_affected":[],"package":"github.com/tinyauthapp/tinyauth","purl":null,"source":"GHSA-456h-ww26-f758"},{"ecosystem":"Go","fixed":["1.0.1-0.20260714134959-c22925c2fba9"],"introduced":["0"],"last_affected":[],"package":"github.com/tinyauthapp/tinyauth","purl":"pkg:golang/github.com/tinyauthapp/tinyauth","source":"GHSA-456h-ww26-f758"},{"ecosystem":"Go","fixed":["1.0.1-0.20260714134959-c22925c2fba9"],"introduced":["0"],"last_affected":[],"package":"github.com/tinyauthapp/tinyauth","purl":"pkg:golang/github.com/tinyauthapp/tinyauth","source":"GO-2026-6555"}],"prev":{"headline":"BentoPDF: SSRF in cors-proxy-worker.js via DNS-based hostname allowlist bypass","id":"CVE-2026-77581"},"products":["tinyauth"],"published":"2026-09-21","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-23","vendors":["tinyauthapp"]},"summary":"Attackers can enumerate valid usernames via timing differences, facilitating targeted credential attacks against Tinyauth authentication server.","url":"https://insights.sbomify.com/CVE-2026-77582/"}