cvedb.io
CVE-2026-45300
HIGH · CVSS 7.4
EPSS exploitation probability: 0%
Published 2026-06-05T20:17:31.893 · Last modified 2026-06-17T10:51:53.410

Summary

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Versions on the 2.x branch prior to 2.15.0 and the 3.x branch prior to 3.0.10 leak `Cookie` headers to cross-origin redirect targets. When following a redirect to a different origin, the `propagatedHeaders()` method in `Redirect30xInterceptor.java` strips `Authorization` and `Proxy-Authorization` headers but does not strip the `Cookie` header, causing session cookies and other sensitive cookie values to be sent to attacker-controlled servers. Versions 2.15.0 and 3.0.10 patch the issue.

Affected products

asynchttpclient_project — async-http-client

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.