Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.
CVSS Details
- CVSS 3.1 Base Score: 7.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Jul 6, 2026 | Jul 3, 2026 |
| Amazon_linux_2023 | — | Upgrade curl-debuginfoUpgrade libcurlUpgrade libcurl-minimal-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurl-develUpgrade curl-debugsourceUpgrade curl-minimalUpgrade curlUpgrade libcurl-minimalUpgrade libcurl-debuginfo | Sep 30, 2026 | Jul 3, 2026 |
| Redhat_linux | — | No solution exists | Oct 19, 2026 | Jul 3, 2026 |
| Ubuntu | — | Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl4 (Ubuntu Pro)Upgrade curlUpgrade libcurl4-nss-dev (Ubuntu Pro)Upgrade libcurl3 (Ubuntu Pro)Upgrade libcurl4-gnutls-devUpgrade libcurl3-nssUpgrade libcurl4-nss-devUpgrade libcurl4-openssl-dev (Ubuntu Pro)Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3t64-gnutlsUpgrade libcurl4-gnutls-dev (Ubuntu Pro)Upgrade curl (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade libcurl4Upgrade libcurl4t64Upgrade libcurl4-openssl-dev | Jul 1, 2026 | Jun 30, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 10, 2026 | Jul 3, 2026 |
Prioritize with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub