CVE-2026-4873

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.

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Produits concernés

• curl
• Haxx curl

Scores CVSS

Faiblesses (CWE)

• CWE-319
• CWE-295

Références

• https://curl.se/docs/CVE-2026-4873.html PatchVendor Advisory
• https://curl.se/docs/CVE-2026-4873.json Vendor Advisory
• https://hackerone.com/reports/3621851 ExploitIssue TrackingThird Party Advisory
• http://www.openwall.com/lists/oss-security/2026/04/29/7 Mailing ListPatchThird Party Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories