by Kastro
Paper/Archive/CVE-2026-107282

CVE-2026-107282

AsyncHttpClient async-http-client — AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host

EPSS 0.2%CVSS 9.4
critical.is priorityof 100
30
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 8.5.085 × 201.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.13 and 2.16.1, cross-host request replay updates the current request but leaves the target request and related proxy context pointing at the original origin. Connection-pool selection, CONNECT handling, realm selection, and TLS setup can consequently send the original host's path, Host header, Authorization credentials, or plaintext request to the replay destination. Documented ResponseFilter failover and retry paths can trigger the replay. This issue is fixed in versions 3.0.13 and 2.16.1.

Affected

ProductAffectedFixed inSource
async-http-client>= 3.0.0, < 3.0.13–CNA
async-http-client>= 2.0.0, < 2.16.1–CNA

Scores by source

GitHub_M (CNA)9.4CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-jmqq-x5g9-9p2wrefgithub.com/AsyncHttpClient/async-http-client/commit/15b254514a411623e5f1d8c99ea79c0f82f8a466refgithub.com/AsyncHttpClient/async-http-client/commit/bbc31aed3b044f9f7a126cf689a8c8d7ad2ae1cbrefgithub.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1refgithub.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13