Bug 2496769 (CVE-2026-8927) - CVE-2026-8927 libcurl: libcurl: Information disclosure due to uncleared proxy authentication state
Summary: CVE-2026-8927 libcurl: libcurl: Information disclosure due to uncleared proxy...
Keywords:
Status: NEW
Alias: CVE-2026-8927
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2497474
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-03 07:02 UTC by OSIDB Bzimport
Modified: 2026-07-06 20:20 UTC (History)
16 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-03 07:02:07 UTC 
When reusing a libcurl handle for sequential transfers driven by
environment-variable proxy configuration, libcurl fails to clear the proxy
authentication state between requests. Specifically, if the initial transfer
authenticates against `proxyA` using Digest auth, a subsequent transfer routed
through `proxyB` erroneously leaks the `Proxy-Authorization:` header intended
solely for `proxyA`.
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