CVE-2026-77358
- Source
- https://cve.org/CVERecord?id=CVE-2026-77358
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77358.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-77358
- Aliases
-
- GHSA-w7p7-f35j-mw7q
- Downstream
- Published
- 2026-08-27T22:37:14.339Z
- Modified
- 2026-08-29T03:47:16.451239832Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- cpp-httplib: Use-after-free of TLS session in WebSocketClient::shutdown_and_close()
- Details
-
cpp-httplib is a C++ header-only HTTP/HTTPS library. In versions 0.33.0 through 0.50.0, the TLS-enabled WebSocket client frees the TLS session before closing the WebSocket that still uses it, producing a use-after-free. In WebSocketClient::shutdownandclose the SSL object is freed and the pointer cleared, but the subsequent WebSocket close still sends a close frame through the SSL socket stream, which holds a raw copy of the now-dangling session pointer and reads from and writes to the freed memory. The same freed-then-used ordering is reachable through the client's destructor and its connect path, so ordinary teardown of a secure WebSocket connection triggers the defect. This issue is fixed in version 0.50.1.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77358.json", "cwe_ids": [ "CWE-416" ], "cna_assigner": "GitHub_M" }- References