CVE-2026-7168
cross-proxy Digest auth state leak
CVE-2026-7168 is fixed in 10 products on 1 platform, first by curl 7.58.0-2ubuntu3.24+esm10, released April 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.5
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0047
40th percentile
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`.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| curl · Debian 12.15 (bookworm) | 7.88.1-10+deb12u15 | DEBIAN-CVE-2026-7168 | May 15, 2026 |
| curl · Debian 13.5 (trixie) | 8.14.1-2+deb13u4 | DEBIAN-CVE-2026-7168 | May 15, 2026 |
| curl · Debian 14 | 8.20.0-1 | DEBIAN-CVE-2026-7168 | May 15, 2026 |
| curl · RHEL 10 | 8.12.1-4.el10_2.7 | RHSA-2026:80512 | Jul 3, 2026 |
| curl · Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm10 | curl 7.58.0-2ubuntu3.24+esm10 | Apr 29, 2026 |
| curl · Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.25+esm5 | curl 7.68.0-1ubuntu2.25+esm5 | Apr 29, 2026 |
| curl · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.24 | curl 7.81.0-1ubuntu1.24 | May 15, 2026 |
| curl · Ubuntu 24.04.5 LTS (noble) | 8.5.0-2ubuntu10.9 | curl 8.5.0-2ubuntu10.9 | May 15, 2026 |
| curl · Ubuntu 25.10 (questing) | 8.14.1-2ubuntu1.3 | curl 8.14.1-2ubuntu1.3 | May 15, 2026 |
| curl · Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.1 | curl 8.18.0-1ubuntu2.1 | Apr 29, 2026 |
| curl · almalinux 10 | 8.12.1-4.el10_2.7 | ALSA-2026:80512 | Nov 7, 2026 |
| curl · ol 10 | 0:8.12.1-4.el10_2.7 | ELSA-2026-80512 | Nov 7, 2026 |
| curl · opensuse-leap 16.0 | 8.14.1-160000.9.1 | OPENSUSE-SU-2026:21774-1 | Sep 6, 2026 |
| curl · rocky 10 | 0:8.12.1-4.el10_2.7 | RLSA-2026:80512 | Nov 7, 2026 |
| curl · sles 15.6 | 8.14.1-150600.4.51.1 | SUSE-SU-2026:4047-1 | Sep 7, 2026 |
| curl · sles 15.7 | 8.14.1-150700.7.23.1 | SUSE-SU-2026:3798-1 | Aug 25, 2026 |
| curl · sles 16.0 | 8.14.1-160000.9.1 | SUSE-SU-2026:23638-1 | Sep 6, 2026 |
| curl-mini · sles 16.0 | 8.14.1-160000.9.1 | SUSE-SU-2026:23638-1 | Sep 6, 2026 |
| libcurl · almalinux 10 | 8.12.1-4.el10_2.7 | ALSA-2026:80512 | Nov 7, 2026 |
| libcurl · ol 10 | 0:8.12.1-4.el10_2.7 | ELSA-2026-80512 | Nov 7, 2026 |
| libcurl-devel · almalinux 10 | 8.12.1-4.el10_2.7 | ALSA-2026:80512 | Nov 7, 2026 |
| libcurl-devel · ol 10 | 0:8.12.1-4.el10_2.7 | ELSA-2026-80512 | Nov 7, 2026 |
| libcurl-minimal · almalinux 10 | 8.12.1-4.el10_2.7 | ALSA-2026:80512 | Nov 7, 2026 |
| libcurl-minimal · ol 10 | 0:8.12.1-4.el10_2.7 | ELSA-2026-80512 | Nov 7, 2026 |
| libcurl3-gnutls · Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm10 | libcurl3-gnutls 7.58.0-2ubuntu3.24+esm10 | Apr 29, 2026 |
| libcurl3-gnutls · Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.25+esm5 | libcurl3-gnutls 7.68.0-1ubuntu2.25+esm5 | Apr 29, 2026 |
| libcurl3-gnutls · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.24 | libcurl3-gnutls 7.81.0-1ubuntu1.24 | May 15, 2026 |
| libcurl3-nss · Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm10 | libcurl3-nss 7.58.0-2ubuntu3.24+esm10 | Apr 29, 2026 |
| libcurl3-nss · Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.25+esm5 | libcurl3-nss 7.68.0-1ubuntu2.25+esm5 | Apr 29, 2026 |
| libcurl3-nss · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.24 | libcurl3-nss 7.81.0-1ubuntu1.24 | May 15, 2026 |
| libcurl3t64-gnutls · Ubuntu 24.04.5 LTS (noble) | 8.5.0-2ubuntu10.9 | libcurl3t64-gnutls 8.5.0-2ubuntu10.9 | May 15, 2026 |
| libcurl3t64-gnutls · Ubuntu 25.10 (questing) | 8.14.1-2ubuntu1.3 | libcurl3t64-gnutls 8.14.1-2ubuntu1.3 | May 15, 2026 |
| libcurl3t64-gnutls · Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.1 | libcurl3t64-gnutls 8.18.0-1ubuntu2.1 | Apr 29, 2026 |
| libcurl4 · Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm10 | libcurl4 7.58.0-2ubuntu3.24+esm10 | Apr 29, 2026 |
| libcurl4 · Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.25+esm5 | libcurl4 7.68.0-1ubuntu2.25+esm5 | Apr 29, 2026 |
| libcurl4 · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.24 | libcurl4 7.81.0-1ubuntu1.24 | May 15, 2026 |
| libcurl4t64 · Ubuntu 24.04.5 LTS (noble) | 8.5.0-2ubuntu10.9 | libcurl4t64 8.5.0-2ubuntu10.9 | May 15, 2026 |
| libcurl4t64 · Ubuntu 25.10 (questing) | 8.14.1-2ubuntu1.3 | libcurl4t64 8.14.1-2ubuntu1.3 | May 15, 2026 |
| libcurl4t64 · Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.1 | libcurl4t64 8.18.0-1ubuntu2.1 | Apr 29, 2026 |
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