{"id":"CVE-2026-7168","title":"Successfully using libcurl to do a transfer over a specific HTTP proxy\n(`proxyA`) with **Digest** authentication and then changing the proxy host to\na second one (`proxyB`) for a second transfer, reusing the same handle, makes\nlibcurl wr…","summary":"Successfully using libcurl to do a transfer over a specific HTTP proxy\n(`proxyA`) with **Digest** authentication and then changing the proxy host to\na second one (`proxyB`) for a second transfer, reusing the same handle, makes\nlibcurl wr…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-294","CWE-201"],"vendor":"haxx","product":"curl","affected":["curl >= 7.12.0, < 8.20.0"],"patched":["curl 8.20.0"],"published":"2026-05-13","updated":"2026-09-15","sourceUpdated":"2026-09-15T07:16:29.890","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-7168","references":[{"url":"https://curl.se/docs/CVE-2026-7168.html","label":"2499f714-1537-4658-8207-48ae4bb9eae9"},{"url":"https://curl.se/docs/CVE-2026-7168.json","label":"2499f714-1537-4658-8207-48ae4bb9eae9"},{"url":"https://hackerone.com/reports/3697719","label":"2499f714-1537-4658-8207-48ae4bb9eae9"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/29/14","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackerone.com/reports/3697719","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7168.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-7168"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2476979"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-7168"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7168"},{"url":"https://access.redhat.com/errata/RHSA-2026:19106"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-05-13T14:18:10.734219Z"},"epss":0.00471,"epssPercentile":0.39797,"ingestedAt":"2026-09-15T07:33:29.267Z","slug":"CVE-2026-7168","body":"## Overview\n\nSuccessfully using libcurl to do a transfer over a specific HTTP proxy\n(`proxyA`) with **Digest** authentication and then changing the proxy host to\na second one (`proxyB`) for a second transfer, reusing the same handle, makes\nlibcurl wrongly pass on the `Proxy-Authorization:` header field meant for\n`proxyA`, to `proxyB`.\n\n## Affected\n\n- `curl >= 7.12.0, < 8.20.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `curl 8.20.0`\n\n## Vendor advisories\n\n- **RHSA-2026:19106** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-05-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:19106)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4, … · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7168.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}