CVE & CISA-KEV Catalog

CVE-2026-7168

MEDIUM
5.3
CVSS v3
NVD

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`.

CWE-294

How to fix

Remediation Available
curlDebian
Fixed in:8.20.0-1CVE-2026-7168
curlRocky
Fixed in:main@x86_64RHSA-2026:19106
Fixed in:main@aarch64RHSA-2026:19106
Fixed in:main@srcRHSA-2026:19106
curlRed Hat / RHEL
Fixed in:main@aarch64RHSA-2026:19106
Fixed in:main@srcRHSA-2026:19106
Fixed in:main@x86_64RHSA-2026:19106
curlUbuntu
Fixed in:7.81.0-1ubuntu1.24USN-8227-1
Fixed in:8.5.0-2ubuntu10.9USN-8227-1
Fixed in:8.14.1-2ubuntu1.3USN-8227-1
libcurl3-gnutlsUbuntu
Fixed in:7.81.0-1ubuntu1.24USN-8227-1
libcurl3-nssUbuntu
Fixed in:7.81.0-1ubuntu1.24USN-8227-1
libcurl3t64-gnutlsUbuntu
Fixed in:8.5.0-2ubuntu10.9USN-8227-1
Fixed in:8.14.1-2ubuntu1.3USN-8227-1
libcurl4Ubuntu
Fixed in:7.81.0-1ubuntu1.24USN-8227-1
libcurl4t64Ubuntu
Fixed in:8.5.0-2ubuntu10.9USN-8227-1
Fixed in:8.14.1-2ubuntu1.3USN-8227-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U

Exploit Intelligence

0.47%probability of exploitation in 30 days
37thpercentile

Low risk: more likely to be exploited than 37% of all known CVEs.

References

Vendor Advisory1
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CVE-2026-7168 severity badge

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-14.