{"id":"CVE-2026-84321","revision":null,"records":[{"revision":"5bd6f93104bf488d81ee33e6008ebf04","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-84321","aliases":[],"title":"Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable","description":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain in the short_token cache and authenticate again if the associated account is re-enabled before the cache entry expires because GetTokenUserByShortToken reads the surviving entry, restoring access to HTTP or WebSocket routes that accept short-token authentication. This issue is fixed in version 2.4.1.","state":0,"publishedAt":"2026-10-12T20:49:36.955+00:00","modifiedAt":"2026-10-13T15:50:29.123+00:00","affected":[{"ecosystem":"Vendor product","name":"nginx-ui","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"0xJacky\",\n                    \"product\": \"nginx-ui\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.4.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wq4w-vwvq-q3x9","https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-84321","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-84321","identifiers":["CVE-2026-84321"]},"retained":false,"historicalAffected":[]},{"revision":"417bc064903b4803a2c046934c4fb484","observedAt":"2026-11-07T15:21:56.651+00:00","statement":{"source":"euvd","id":"EUVD-2026-97864","aliases":["CVE-2026-84321","GHSA-wq4w-vwvq-q3x9"],"title":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field …","description":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain in the short_token cache and authenticate again if the associated account is re-enabled before the cache entry expires because GetTokenUserByShortToken reads the surviving entry, restoring access to HTTP or WebSocket routes that accept short-token authentication. This issue is fixed in version 2.4.1.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4,"severity":null}],"references":["https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wq4w-vwvq-q3x9","https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-97864","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 12, 2026, 8:49:36 PM","dateUpdated":"Oct 13, 2026, 3:50:29 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-97864","identifiers":["EUVD-2026-97864","CVE-2026-84321","GHSA-wq4w-vwvq-q3x9"]},"retained":false,"historicalAffected":[]},{"revision":"9e80a0366e194ad285dd0f5ed4932176","observedAt":"2026-10-25T16:19:16.24+00:00","statement":{"source":"nvd","id":"CVE-2026-84321","aliases":[],"title":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field …","description":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain in the short_token cache and authenticate again if the associated account is re-enabled before the cache entry expires because GetTokenUserByShortToken reads the surviving entry, restoring access to HTTP or WebSocket routes that accept short-token authentication. This issue is fixed in version 2.4.1.","state":0,"publishedAt":"2026-10-12T21:17:22.817+00:00","modifiedAt":"2026-10-13T16:17:23.713+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4,"severity":"MEDIUM"}],"references":["https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1","https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wq4w-vwvq-q3x9"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84321","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-613"],"productCriteria":[],"sourceDates":{"published":"2026-10-12T21:17:22.817","lastModified":"2026-10-13T16:17:23.713"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-84321","identifiers":["CVE-2026-84321"]},"retained":false,"historicalAffected":[]},{"revision":"5060198870454897b4dcf778e2dd2e02","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-wq4w-vwvq-q3x9","aliases":["CVE-2026-84321","GO-2026-6801"],"title":"Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable","description":"### Summary\nStandalone short tokens issued for WebSocket and explicit-token authentication can survive administrative revocation in cache. If the same account is later re-enabled before the cache entry expires, the deleted short token becomes valid again.\n\n### Details\n`GenerateShortToken()` creates an `AuthToken` row that contains only `ShortToken` and no long `Token`. `DeleteUserTokens()` removes database rows, but when clearing caches it only invalidates entries where `authToken.Token != \"\"`. This leaves standalone short-token cache entries behind. `GetTokenUserByShortToken()` checks that cache first and then loads the user by ID, so the stale short token becomes usable again if the account status is restored to `true`.\n\nRelevant code paths:\n- [internal/user/user.go](/home/kali/Desktop/bounty/nginx-ui/internal/user/user.go:43)\n- [internal/user/user.go](/home/kali/Desktop/bounty/nginx-ui/internal/user/user.go:118)\n- [internal/user/user.go](/home/kali/Desktop/bounty/nginx-ui/internal/user/user.go:204)\n- [api/user/short_token.go](/home/kali/Desktop/bounty/nginx-ui/api/user/short_token.go:13)\n- [internal/middleware/middleware.go](/home/kali/Desktop/bounty/nginx-ui/internal/middleware/middleware.go:82)\n\n### PoC\nThis was verfied locally in an isolated environment with a temporary package-level harness that exercised the real token issuance, revocation, cache, and re-authentication paths.\n\nWhat the executed test did:\n1. Created an enabled user in a temporary SQLite database.\n2. Called the real `GenerateShortToken(user.ID)` function to issue a standalone short token.\n3. Verified that the token authenticated successfully and was present in the short-token cache.\n4. Disabled the user and called the real `DeleteUserTokens(user.ID)` function.\n5. Verified that the database token rows were removed.\n6. Verified that the short-token cache entry still existed after `DeleteUserTokens`.\n7. Re-enabled the same user.\n8. Reused the previously deleted short token via the real `GetTokenUserByShortToken()` path and observed successful authentication.\n\nObserved result from the actual local verification:\n- The database token rows were removed during revocation.\n- The short-token cache entry remained present.\n- Re-enabling the user restored successful authentication through the stale short token.\n\n### Impact\nAny deployment using standalone short tokens is affected. If a short token is stolen, administrative disable/delete-token handling may not fully revoke it. Re-enabling the account within the cache lifetime restores access for the stale token to any HTTP or WebSocket routes that accept short-token authentication.","state":0,"publishedAt":"2026-10-15T20:14:01+00:00","modifiedAt":"2026-10-19T21:41:20.9368799+00:00","affected":[{"ecosystem":"Go","name":"github.com/0xJacky/Nginx-UI","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.9.10-0.20260703131214-23d1934099b0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wq4w-vwvq-q3x9","https://nvd.nist.gov/vuln/detail/CVE-2026-84321","https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2","https://github.com/0xJacky/nginx-ui","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1"],"sourceUrl":"https://github.com/advisories/GHSA-wq4w-vwvq-q3x9","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-wq4w-vwvq-q3x9","identifiers":["GHSA-wq4w-vwvq-q3x9","CVE-2026-84321","GO-2026-6801"]},"retained":false,"historicalAffected":[]},{"revision":"87c762da59144b8c848c17d96683b319","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6801","aliases":["CVE-2026-84321","GHSA-wq4w-vwvq-q3x9"],"title":"Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable in github.com/0xJacky/Nginx-UI","description":"Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable in github.com/0xJacky/Nginx-UI","state":0,"publishedAt":"2026-10-19T21:08:35+00:00","modifiedAt":"2026-10-19T21:31:53.4209558+00:00","affected":[{"ecosystem":"Go","name":"github.com/0xJacky/Nginx-UI","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.9.10-0.20260703131214-23d1934099b0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wq4w-vwvq-q3x9","https://nvd.nist.gov/vuln/detail/CVE-2026-84321","https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6801","license":"OSV · upstream source license applies","key":"osv:GO-2026-6801","identifiers":["GO-2026-6801","CVE-2026-84321","GHSA-wq4w-vwvq-q3x9"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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