CVE-2026-13608High· 7.4▾ MidnightPoC availableA 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 …
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 40.7 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 7.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Exploit / PoC code exists
— → 7.4
none → high
7.4 → —
high → none
— → 7.4
none → high
0.3% → 0.6%
Last analysed / modified upstream
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.
curl >= 7.82.0, < 8.22.0Upgrade past the affected range:
curl 8.22.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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