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CVE-2026-13608

OpenLDAP SASL authentication bypass

Published: Sep 6, 2026Updated: Sep 15, 2026 Sources: CVE List NVDCWE-923
7.4HIGH
NVD MITRE
EPSS Score
0.6%
Top 50.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-923

Affected Products

curl
oss-project·USaka wcurl, libcurl
curlLibraryLibrary
OSS Libraries / generic-library
haxx
oss-project·SEaka haxx.se
curl
OSS Libraries

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-13608?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://curl.se/docs/CVE-2026-13608.json
curl.se
https://curl.se/docs/CVE-2026-13608.html
curl.se
https://hackerone.com/reports/3822248
hackerone.com
News mentions
1

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