What is CVE-2026-7168?

CVE-2026-7168 is a medium-severity vulnerability in Curl, classified under Authentication Bypass by Capture-replay. CVSS score: 5.3/10. Published 2026-05-13.

How severe is CVE-2026-7168?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Curl

CVE-2026-7168

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 wron…

EPSS: 0.001 (23.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Curl — versions 8.19.0, 8.18.0, 8.17.0
Haxx Curl

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

2499f714-1537-4658-8207-48ae4bb9eae9 (Vendor Advisory)
2499f714-1537-4658-8207-48ae4bb9eae9 (Patch, Vendor Advisory)
2499f714-1537-4658-8207-48ae4bb9eae9 (Exploit, Issue Tracking)
af854a3a-2127-422b-91ae-364da2661108 (Patch, Mailing List)

Frequently asked questions

What is CVE-2026-7168?: CVE-2026-7168 is a medium-severity vulnerability in Curl, classified under Authentication Bypass by Capture-replay. CVSS score: 5.3/10. Published 2026-05-13.
How severe is CVE-2026-7168?: Medium severity. CVSS v3 base score is 5.3 out of 10.