CVE-2026-3784
wrong proxy connection reuse with credentials
Description
curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:LIntegrityLow
A:NAvailabilityNone
Weaknesses
Affected Products
haxx
oss-project·SEaka haxx.se
Canonical Ltd.
commercial·GBaka canonical
Сообщество свободного программного обеспечения
oss-projectaka fsf
ООО «Ред Софт»
commercial·RUaka red soft
Daniel Stenberg
individual-devaka daniel.haxx.se, daniel stenberg (curl author)
curl
oss-project·USaka libcurl, wcurl
Exploitability
Official Patch Available
References
https://curl.se/docs/CVE-2026-3784.html
curl.se
https://curl.se/docs/CVE-2026-3784.json
curl.se
https://hackerone.com/reports/3584903
hackerone.com
and 161 more references View all →
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