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Cross-host replay in AsyncHttpClient leaks credentials to new host

Priority MEDIUM 48CWE-319Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-319.

Summary

Affected are async-http-client 3.0.0 before 3.0.13 and 2.0.0 before 2.16.1. Cross-host request replay updates the current request but leaves the target request and proxy context on the original host (CWE-441). Connection pool, CONNECT and TLS handling can then send the original host's path, Host header, Authorization credentials or plaintext request to the replay destination. An unauthenticated remote attacker needs no user interaction, though the attack is complex.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00189 8th percentileScored 2026-11-07
Fix Fixed async-http-client (AsyncHttpClient): 3.0.13, 2.16.1org.asynchttpclient:async-http-client (Maven): 3.0.13, 2.16.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AsyncHttpClientasync-http-client3.0.0 to before 3.0.13; 2.0.0 to before 2.16.13.0.13, 2.16.1Patch availableCNA
—org.asynchttpclient:async-http-client (Maven)3.0.0 to before 3.0.133.0.13Patch availableGHSA-jmqq-x5g9-9p2w
—org.asynchttpclient:async-http-client (Maven)2.0.0 to before 2.16.12.16.1Patch availableGHSA-jmqq-x5g9-9p2w
  • async-http-client VendorAsyncHttpClient Affected 3.0.0 to before 3.0.13; 2.0.0 to before 2.16.1 Fixed in 3.0.13, 2.16.1 Patch available CNA
  • org.asynchttpclient:async-http-client (Maven) Vendor— Affected 3.0.0 to before 3.0.13 Fixed in 3.0.13 Patch available GHSA-jmqq-x5g9-9p2w
  • org.asynchttpclient:async-http-client (Maven) Vendor— Affected 2.0.0 to before 2.16.1 Fixed in 2.16.1 Patch available GHSA-jmqq-x5g9-9p2w

Remediation

Upgrade org.asynchttpclient:async-http-client to version 3.0.13 or to version 2.16.1.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA async-http-client (AsyncHttpClient) Fixed in 3.0.13, 2.16.1
  • Fix · GHSA-jmqq-x5g9-9p2w org.asynchttpclient:async-http-client (Maven) Fixed in 3.0.13 Advisory →
  • Fix · GHSA-jmqq-x5g9-9p2w org.asynchttpclient:async-http-client (Maven) Fixed in 2.16.1 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Critical. Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat Fuse 7

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-107282
  2. 2026-10-08 Alias added: GHSA-jmqq-x5g9-9p2w
  3. 2026-10-08 Fix available: Maven/org.asynchttpclient:[email protected], Maven/org.asynchttpclient:[email protected] · GHSA-jmqq-x5g9-9p2w
  4. 2026-10-08 CVSS score added · GHSA-jmqq-x5g9-9p2w
  5. 2026-10-08 Weakness changed · GHSA-jmqq-x5g9-9p2w
  6. 2026-10-08 7 new references · GHSA-jmqq-x5g9-9p2w
  7. 2026-10-10 Affected versions changed · Red Hat
  8. 2026-10-10 CVSS score added · Red Hat
  9. 2026-10-10 CISA SSVC decision points changed
  10. 2026-10-16 Affected versions changed · Red Hat

References

  • TI-2024-36149 AsyncHttpClient (AHC) library's `CookieStore` replaces explicitly defined `Cookie`s CVSS 4.0CRITICAL 9.2
  • TI-2026-69315 AsyncHttpClient sends passwords in cleartext after Digest downgrade CVSS 4.0HIGH 8.7
  • TI-2026-58825 AsyncHttpClient: Unbounded HTTP/1.1 response decompression enables a decompression-bomb denial of service CVSS 3.1HIGH 7.5
  • TI-2026-69311 Unbounded WebSocket decompression in AsyncHttpClient enables DoS CVSS 3.1HIGH 7.5
  • TI-2026-58823 AsyncHttpClient: SOCKS proxy credentials sent to the origin server over plaintext HTTP CVSS 3.1HIGH 7.5
  • TI-2026-69317 AsyncHttpClient skips Digest mutual authentication for qop=auth-int CVSS 4.0HIGH 8.8
See all 23 →

Sources