{"answers":{"affected":"4 open source packages ship an affected version, including org.asynchttpclient:async-http-client.","exploited":"There is no known exploitation of CVE-2026-85720 in the wild and no public exploit code.","fix":"Upgrade org.asynchttpclient:async-http-client to a fixed version for your release line: 2.16.1 or 3.0.12.","what":"CVE-2026-85720 is a medium-severity vulnerability in AsyncHttpClient async-http-client, published on 17 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-2026-85720 and fix it if it is affected.\n\nWhat it is: CVE-2026-85720 is a medium-severity vulnerability in AsyncHttpClient async-http-client, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-85720 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.asynchttpclient:async-http-client (Maven): affected from 2.0.0; fixed in 2.16.1\n- org.asynchttpclient:async-http-client (Maven): affected from 2.0.0; fixed in 2.16.1\n- org.asynchttpclient:async-http-client (Maven): affected from 3.0.0; fixed in 3.0.12\n- org.asynchttpclient:async-http-client (Maven): affected from 3.0.0; fixed in 3.0.12\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-2026-85720/ (Markdown: https://insights.sbomify.com/CVE-2026-85720/index.md)","id":"CVE-2026-85720","markdown":"https://insights.sbomify.com/CVE-2026-85720/index.md","name":"CVE-2026-85720","record":{"aliases":["DEBIAN-CVE-2026-85720","ECHO-085c-5da2-0e78","GHSA-xr57-gcx8-52hf","MINI-76xm-5pmc-73pp","MINI-77qw-pcch-mrr4","MINI-jfr8-2v76-mx22","MINI-pw44-32pc-88qr","UBUNTU-CVE-2026-85720"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Java HTTP client library","requires_auth":"none","summary":"Attackers can intercept origin credentials sent in plaintext during proxy CONNECT requests, exposing sensitive authentication data to proxies and network observers.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-522","name":"Insufficiently Protected Credentials"},{"id":"CWE-319","name":"Cleartext Transmission of Sensitive Information"}],"description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.0.0 until 2.16.1 and 3.0.12, a request using an HTTP proxy to reach an HTTPS origin can expose preemptive origin credentials because NettyRequestFactory and NettyRequestSender.sendRequestWithNewChannel attach Authorization to the plaintext CONNECT request before the TLS tunnel exists. Basic or Digest credentials and per-connection NTLM, Kerberos, or SPNEGO tokens intended for the origin are therefore visible to the proxy and to observers on the client-to-proxy hop. The tunneled request still receives origin Authorization after the tunnel is established, while Proxy-Authorization remains on CONNECT for its intended proxy recipient. This issue is fixed in versions 2.16.1 and 3.0.12.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"AsyncHttpClient: Origin credentials sent to the proxy on the plaintext CONNECT request","id":"CVE-2026-85720","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"AsyncHttpClient: Unbounded HTTP/1.1 response decompression enables a decompression-bomb denial of service","id":"CVE-2026-85721"},"packages":[{"ecosystem":"Maven","fixed":["2.16.1"],"introduced":["2.0.0"],"last_affected":[],"package":"org.asynchttpclient:async-http-client","purl":null,"source":"GHSA-xr57-gcx8-52hf"},{"ecosystem":"Maven","fixed":["2.16.1"],"introduced":["2.0.0"],"last_affected":[],"package":"org.asynchttpclient:async-http-client","purl":"pkg:maven/org.asynchttpclient/async-http-client","source":"GHSA-xr57-gcx8-52hf"},{"ecosystem":"Maven","fixed":["3.0.12"],"introduced":["3.0.0"],"last_affected":[],"package":"org.asynchttpclient:async-http-client","purl":null,"source":"GHSA-xr57-gcx8-52hf"},{"ecosystem":"Maven","fixed":["3.0.12"],"introduced":["3.0.0"],"last_affected":[],"package":"org.asynchttpclient:async-http-client","purl":"pkg:maven/org.asynchttpclient/async-http-client","source":"GHSA-xr57-gcx8-52hf"}],"prev":{"headline":"AsyncHttpClient: SOCKS proxy credentials sent to the origin server over plaintext HTTP","id":"CVE-2026-85719"},"products":["async-http-client"],"published":"2026-09-17","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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["AsyncHttpClient"]},"summary":"Attackers can intercept origin credentials sent in plaintext during proxy CONNECT requests, exposing sensitive authentication data to proxies and network observers.","url":"https://insights.sbomify.com/CVE-2026-85720/"}