| Name | CVE-2026-7168 |
| 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`. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| curl (PTS) | bullseye | 7.74.0-1.3+deb11u13 | vulnerable |
| bullseye (security) | 7.74.0-1.3+deb11u16 | vulnerable | |
| bookworm | 7.88.1-10+deb12u14 | vulnerable | |
| bookworm (security) | 7.88.1-10+deb12u5 | vulnerable | |
| trixie | 8.14.1-2+deb13u3 | vulnerable | |
| forky | 8.20.0-1 | fixed | |
| sid | 8.20.0-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| curl | source | (unstable) | 8.20.0-1 |
[trixie] - curl <no-dsa> (Minor issue)
[bookworm] - curl <no-dsa> (Minor issue)
[bullseye] - curl <postponed> (Minor issue; can be fixed in next update)
https://curl.se/docs/CVE-2026-7168.html
Introduced by: https://github.com/curl/curl/commit/fc6eff13b5414caf6edf22d73a3239e074a04216 (curl-7_12_0)
Fixed by: https://github.com/curl/curl/commit/c1cfdf59acbaf9504c4578d4cf56cdd7c8594507 (curl-8_20_0)