CVE-2026-7168
cross-proxy Digest auth state leak
Description
Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and then changing the proxy host to a second one (`proxyB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Proxy-Authorization:` header field meant for `proxyA`, to `proxyB`.
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:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Defense Evasion
References
https://curl.se/docs/CVE-2026-7168.json
curl.se
https://curl.se/docs/CVE-2026-7168.html
curl.se
https://hackerone.com/reports/3697719
hackerone.com
and 1 more references View all →
Timeline
Published
May 13, 2026
Last Updated
May 14, 2026
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