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.

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Haxx
Haxx curl
CPEs cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
Vendors & Products Haxx
Haxx curl

Tue, 08 Sep 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287

Tue, 08 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-923
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sun, 06 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Curl
Curl curl
Vendors & Products Curl
Curl curl

Sun, 06 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287

Sun, 06 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenLDAP SASL authentication bypass
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: curl

Published:

Updated: 2026-09-15T06:02:45.788Z

Reserved: 2026-06-29T08:57:44.945Z

Link: CVE-2026-13608

cve-icon Vulnrichment

Updated: 2026-09-08T15:39:40.949Z

cve-icon NVD

Status : Modified

Published: 2026-09-06T18:17:19.810

Modified: 2026-09-15T07:16:26.353

Link: CVE-2026-13608

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T04:00:06Z

Weaknesses