libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Jul 6, 2026 | Jul 3, 2026 |
| Redhat_linux | — | Upgrade libcurl-minimal-debuginfoUpgrade libcurl-develUpgrade curl-debugsourceUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade curlUpgrade libcurlUpgrade libcurl-minimal | Sep 2, 2026 | Jul 3, 2026 |
| Ubuntu | — | Upgrade libcurl4-openssl-devUpgrade libcurl3-nssUpgrade libcurl4 (Ubuntu Pro)Upgrade libcurl4-nss-dev (Ubuntu Pro)Upgrade libcurl4t64Upgrade libcurl3 (Ubuntu Pro)Upgrade curlUpgrade libcurl3t64-gnutlsUpgrade libcurl4-nss-devUpgrade libcurl3-gnutlsUpgrade curl (Ubuntu Pro)Upgrade libcurl4Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl4-openssl-dev (Ubuntu Pro)Upgrade libcurl4-gnutls-devUpgrade libcurl4-gnutls-dev (Ubuntu Pro) | Jul 1, 2026 | Jun 30, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 3, 2026 |
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