CVE-2026-107280 · GHSA-f9m8-cv68-674w
AsyncHttpClient: Cookie Domain attribute is not checked against the public suffix list, so a cookie can be set for co.uk
- Risk score
- 50/100
- CVSS
- 6.9 v4.0
- Exploit chance (30 days)
- 0.3%
- Published
- 7 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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, ThreadSafeCookieStore validates Domain attributes with domain matching but does not reject public suffixes. A host beneath a suffix such as co.uk can set a c…
- Affected
- org.asynchttpclient:async-http-client (maven) >= 3.0.0, <= 3.0.12; org.asynchttpclient:async-http-client (maven) >= 2.0.0, <= 2.16.0
- Fix
- Upgrade org.asynchttpclient:async-http-client to 3.0.13 or 2.16.1 (whichever matches your release line) or later.
- Exploitation
- No known exploitation
Story map
At a glance
org.asynchttpclient:async-http-client: Amber, patch this week. 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-poo…
The flaws
- CVE-2026-107280: AsyncHttpClient: Cookie Domain attribute is not checked against the public suffix list, so a cookie can be set for co.uk (CVSS 6.9 · EPSS 0%)
- CVE-2026-107282: AsyncHttpClient: Replay to a different host sends the original host request and credentials to the new host (CVSS 9.4 · EPSS 0%)
- CVE-2026-107231: AsyncHttpClient: Digest challenge without a usable nonce downgrades to Basic and sends the password in cleartext (CVSS 8.7 · EPSS 0%)
- CVE-2026-107227: AsyncHttpClient: Unbounded WebSocket permessage-deflate decompression enables a decompression-bomb denial of service when compression is enabled (CVSS 7.5 · EPSS 0%)
The fix
Upgrade org.asynchttpclient:async-http-client: 3.0.13 · 2.16.1 · 3.0.14 or later on your release line
Who is exposed: org.asynchttpclient:async-http-client (maven) >= 3.0.0, <= 3.0.12; org.asynchttpclient:async-http-client (maven) >= 2.0.0, <= 2.16.0
Where it stands
- No known exploitation
Why it is Yellow
- CVSS 6.9 medium
- On your watchlist: Maven
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| org.asynchttpclient:async-http-client | maven | >= 3.0.0, <= 3.0.12 | 3.0.13 |
| org.asynchttpclient:async-http-client | maven | >= 2.0.0, <= 2.16.0 | 2.16.1 |
References
- https://github.com/advisories/GHSA-f9m8-cv68-674w
- https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-f9m8-cv68-674w
- https://nvd.nist.gov/vuln/detail/CVE-2026-107280
- https://github.com/AsyncHttpClient/async-http-client/commit/330267895fe0bdb41bbd027ea6b151d38ee7c23d
- https://github.com/AsyncHttpClient/async-http-client/commit/d1f0ccec417092098d40242fee7dfac84bb3c21f
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-2.16.1
- https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13
- https://github.com/advisories/GHSA-f9m8-cv68-674w
Original description
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, ThreadSafeCookieStore validates Domain attributes with domain matching but does not reject public suffixes. A host beneath a suffix such as co.uk can set a cookie for that suffix, after which the shared cookie store sends it to unrelated hosts under the suffix. This can inject or overwrite session-relevant cookie values across origins. This issue is fixed in versions 3.0.13 and 2.16.1.
Last activity 7 Oct 2026. Patch Forecast updates every hour.