CVE-2026-13608
CVSS v3
7.4
HIGH
EPSS Score
0.5 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2026-09-06
- Last Modified
- 2026-09-08
Frequently asked questions
What is 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.
Is CVE-2026-13608 actively exploited?
Active exploitation of CVE-2026-13608 has not been confirmed. Its EPSS score was 0.5% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-13608?
CVE-2026-13608 has a CVSS v3 base score of 7.4 (HIGH severity).
Is CVE-2026-13608 affecting your environment?
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