CVE-2026-7168

MEDIUM EPSS 37.3%
Published May 13, 20261mo ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Medium
Find Similar
Published May 13, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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`.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
37.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-294

Affected Products 1

VendorProductVersionRange
haxxcurl*≥7.12.0  –  <8.20.0

References 4

  • openwall.com http://www.openwall.com/lists/oss-security/2026/04/29/14
    Mailing ListPatch
  • curl.se https://curl.se/docs/CVE-2026-7168.html
    PatchVendor Advisory
  • curl.se https://curl.se/docs/CVE-2026-7168.json
    Vendor Advisory
  • hackerone.com https://hackerone.com/reports/3697719
    ExploitIssue Tracking

Remediation

  • openwall.com http://www.openwall.com/lists/oss-security/2026/04/29/14
    Mailing ListPatch
  • curl.se https://curl.se/docs/CVE-2026-7168.html
    PatchVendor Advisory