{"schema":"threatline.record/2","record":{"id":"CVE-2026-107230","aliases":["GHSA-v2j5-22fr-j62r"],"summary":"AsyncHttpClient: Pooled connections can still be shared across NTLM, Negotiate and proxy logins","details":"### Impact\nThe fix for GHSA-vvp4-63h8-v5pm in 3.0.13 folded the authenticated principal into the HTTP/1.1 connection pool key, so that a connection one principal authenticated with NTLM, Kerberos or SPNEGO is not handed to another. It left three cases out. In each, a socket that one identity authenticated can still be drawn by a request belonging to a different identity, and the server serves that request as the first one.\n\n1. **A login with no configured principal.** Kerberos and SPNEGO against the ticket cache or the default JAAS login, which is the usual deployment, leave the realm's principal unset, and the key stayed unscoped in that case. A request to the same host that carries no credentials at all draws the authenticated socket and is served as the service identity.\n2. **The proxy realm.** Only the origin realm went into the key. A connection authenticated to a proxy with NTLM or Negotiate is handed to requests of another proxy identity, or of none, and the proxy acts for them as the first identity.\n3. **Identities that share a user name.** Only the principal string went into the key, so `CORP\\alice` and `OTHER\\alice` shared connections, as did two realms differing only in password, login context, keytab or service principal. The Kerberos login cache in `SpnegoEngine` had the same collision, and it was an unsynchronised map, so concurrent first use could hand one caller's login to another.\n\n### Who is Impacted\nApplications that authenticate with NTLM, Kerberos or SPNEGO, to an origin or to a proxy, and send requests under different identities, or both with and without credentials, to the same host through one client. The sharpest case is a service that calls an internal host under its own Kerberos identity and also fetches user-supplied URLs: a URL on that host is fetched as the service. Basic and Digest are not affected.\n\n### Affected versions\n* 3.x: 3.0.13\n* 2.x: 2.16.1\n\nEarlier versions are covered by GHSA-vvp4-63h8-v5pm.\n\n### Patches\nFixed in 3.0.14. The pool key now carries a digest of every field of the realm that decides which identity the connection ends up as, for the origin and the proxy separately, and a realm that authenticates the connection is scoped whether or not it names a principal. `SpnegoEngine` caches logins in a concurrent map keyed by every other field of that identity, and replaces a cached login when the password changes.\n\nThe 2.x line is end of life and will not receive a fix. Upgrade to 3.0.14.\n\n### Workarounds\nUse a separate `AsyncHttpClient` instance per identity, and do not share one between authenticated and unauthenticated requests to a host that uses NTLM or Negotiate. Disabling connection pooling also removes the reuse.\n\nIncomplete fix of GHSA-vvp4-63h8-v5pm.","categories":["Libraries & packages"],"product":"org.asynchttpclient:async-http-client","vendor":"AsyncHttpClient","ecosystem":"maven","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-v2j5-22fr-j62r","source_modified_at":"2026-10-08T16:49:47Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"maven","name":"org.asynchttpclient:async-http-client"},"range":">= 3.0.0, < 3.0.14"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-v2j5-22fr-j62r","source_modified_at":"2026-10-08T16:49:47Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"maven","name":"org.asynchttpclient:async-http-client"},"range":">= 2.0.0, <= 2.16.1"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107230","source_modified_at":"2026-10-08T17:59:43.962Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"async-http-client","vendor":"AsyncHttpClient","versions":[{"version":">= 3.0.0, < 3.0.14","status":"affected"},{"version":">= 2.0.0, <= 2.16.1","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v2j5-22fr-j62r","source_modified_at":"2026-10-08T17:01:03.329024369Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"org.asynchttpclient:async-http-client","ecosystem":"Maven","purl":"pkg:maven/org.asynchttpclient/async-http-client"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.0.14"}]}],"versions":["3.0.0","3.0.1","3.0.10","3.0.11","3.0.12","3.0.13","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9"]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v2j5-22fr-j62r","source_modified_at":"2026-10-08T17:01:03.329024369Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"org.asynchttpclient:async-http-client","ecosystem":"Maven","purl":"pkg:maven/org.asynchttpclient/async-http-client"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"last_affected":"2.16.1"}]}],"versions":["2.0.0","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.2","2.0.20","2.0.21","2.0.22","2.0.23","2.0.24","2.0.25","2.0.26","2.0.27","2.0.28","2.0.29","2.0.3","2.0.30","2.0.31","2.0.32","2.0.33","2.0.34","2.0.35","2.0.36","2.0.37","2.0.38","2.0.39","2.0.4","2.0.40","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9","2.1.0","2.1.0-RC1","2.1.0-RC2","2.1.0-RC3","2.1.0-RC4","2.1.0-alpha1","2.1.0-alpha10","2.1.0-alpha11","2.1.0-alpha12"]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-v2j5-22fr-j62r","source_modified_at":"2026-10-08T16:49:47Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"maven","name":"org.asynchttpclient:async-http-client"},"version":"3.0.14"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v2j5-22fr-j62r","source_modified_at":"2026-10-08T17:01:03.329024369Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"org.asynchttpclient:async-http-client","ecosystem":"Maven","purl":"pkg:maven/org.asynchttpclient/async-http-client"},"version":"3.0.14"}],"cvss":7.4,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00188,"percentile":0.07991,"score_date":"2026-10-23"},"published_at":"2026-10-07T21:00:47.997Z","modified_at":"2026-10-08T17:59:43.962Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-v2j5-22fr-j62r","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-08T16:49:47Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107230","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-08T17:59:43.962Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-v2j5-22fr-j62r","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-08T17:01:03.329024369Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107230","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-v2j5-22fr-j62r","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107230","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/AsyncHttpClient/async-http-client/commit/d3bb4d68b41acf5d3ab7541afa9fdfe7ec3ba054","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.14","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-v2j5-22fr-j62r","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-08T17:58:59.225362Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-08T17:59:43.962Z","content_hash":"b2a9944003e6ff29e0ac35229ff670e794ec4bfafaea9fd25ce26a32497d37e9"}}