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CVE-2026-7168

medium CVSS 5.3 EPSS 0.6%

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`.

Versions it affects

Software versions checked with the free lookup that CVE-2026-7168 applies to, and the release that fixes it where the sources name one.

curl 8.1.2 fixed in 8.14.2

At a glance

Severity
Medium
CVSS base score
5.3 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.6% probability of exploitation in the next 30 days, higher than 47% of scored vulnerabilities
Weakness
CWE-294
Published
2026-05-13
NVD CVE.org

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