CVE-2026-13608

A flaw in the libcurl SASL negotiation for LDAP authentication allows an incomplete handshake sequence to be misinterpreted as a successful cryptographic verification. An attacker executing a Man-in-the-Middle (MITM) attack can inject a premature or shortcut response that bypasses complete peer validation.

CVSS v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://curl.se/docs/CVE-2026-13608.html	Patch Vendor Advisory
https://curl.se/docs/CVE-2026-13608.json	Vendor Advisory
https://hackerone.com/reports/3822248	Exploit Third Party Advisory
https://hackerone.com/reports/3822248	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-09-06 18:17

Updated : 2026-09-15 07:16

NVD link : CVE-2026-13608

Mitre link : CVE-2026-13608

CVE.ORG link : CVE-2026-13608

JSON object : View

Products Affected

haxx

curl

CWE

CWE-923

Improper Restriction of Communication Channel to Intended Endpoints

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