CVE-2026-13608 — OpenLDAP SASL authentication bypass

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
curl / curl	affected 7.82.0 before 8.14.2; affected 8.15.0 before 8.16.1; affected 8.17.0 before 8.20.1; affected 8.21.0 before 8.22.0
curl / curl	affected eeca818b1e8d1e61c2d4d833aed56ce4c510a9d4 before ea71c3b6b60e563651ea8596a975aef0c8199519
curl / curl	affected 8.21.0; affected 8.20.0; affected 8.19.0; affected 8.18.0; affected 8.17.0; affected 8.16.0; affected 8.15.0; affected 8.14.1; affected 8.14.0; affected 8.13.0; affected 8.12.1; affected 8.12.0; affected 8.11.1; affected 8.11.0; affected 8.10.1; affected 8.10.0; affected 8.9.1; affected 8.9.0; affected 8.8.0; affected 8.7.1; affected 8.7.0; affected 8.6.0; affected 8.5.0; affected 8.4.0; affected 8.3.0; affected 8.2.1; affected 8.2.0; affected 8.1.2; affected 8.1.1; affected 8.1.0; affected 8.0.1; affected 8.0.0; affected 7.88.1; affected 7.88.0; affected 7.87.0; affected 7.86.0; affected 7.85.0; affected 7.84.0; affected 7.83.1; affected 7.83.0; affected 7.82.0

CWE

CWE-923

References

ADP enrichment

CISA-ADP

No English description supplied.

https://hackerone.com/reports/3822248