CVE-2026-4873
connection reuse ignores TLS requirement
- State
- Published
- Severity
- 5.9 Medium
- Published
- May 13, 2026
- Updated
- Sep 15, 2026
- Reserved
- Mar 26, 2026
Description
A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If an initial transfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request to that same host bypasses the TLS requirement and instead transmit data unencrypted.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-319 Cleartext Transmission of Sensitive Information
Affected Products
| Product | Versions |
|---|---|
curlcurl |
|
curlcurl |
|
curlcurl |
|
References
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