CVE-2026-13608
N/A
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| curl | curl | 8.21.0 <= 8.21.0 | affected |
| curl | curl | 8.20.0 <= 8.20.0 | affected |
| curl | curl | 8.19.0 <= 8.19.0 | affected |
| curl | curl | 8.18.0 <= 8.18.0 | affected |
| curl | curl | 8.17.0 <= 8.17.0 | affected |
| curl | curl | 8.16.0 <= 8.16.0 | affected |
| curl | curl | 8.15.0 <= 8.15.0 | affected |
| curl | curl | 8.14.1 <= 8.14.1 | affected |
| curl | curl | 8.14.0 <= 8.14.0 | affected |
| curl | curl | 8.13.0 <= 8.13.0 | affected |
| curl | curl | 8.12.1 <= 8.12.1 | affected |
| curl | curl | 8.12.0 <= 8.12.0 | affected |
| curl | curl | 8.11.1 <= 8.11.1 | affected |
| curl | curl | 8.11.0 <= 8.11.0 | affected |
| curl | curl | 8.10.1 <= 8.10.1 | affected |
| curl | curl | 8.10.0 <= 8.10.0 | affected |
| curl | curl | 8.9.1 <= 8.9.1 | affected |
| curl | curl | 8.9.0 <= 8.9.0 | affected |
| curl | curl | 8.8.0 <= 8.8.0 | affected |
| curl | curl | 8.7.1 <= 8.7.1 | affected |
| curl | curl | 8.7.0 <= 8.7.0 | affected |
| curl | curl | 8.6.0 <= 8.6.0 | affected |
| curl | curl | 8.5.0 <= 8.5.0 | affected |
| curl | curl | 8.4.0 <= 8.4.0 | affected |
| curl | curl | 8.3.0 <= 8.3.0 | affected |
| curl | curl | 8.2.1 <= 8.2.1 | affected |
| curl | curl | 8.2.0 <= 8.2.0 | affected |
| curl | curl | 8.1.2 <= 8.1.2 | affected |
| curl | curl | 8.1.1 <= 8.1.1 | affected |
| curl | curl | 8.1.0 <= 8.1.0 | affected |
| curl | curl | 8.0.1 <= 8.0.1 | affected |
| curl | curl | 8.0.0 <= 8.0.0 | affected |
| curl | curl | 7.88.1 <= 7.88.1 | affected |
| curl | curl | 7.88.0 <= 7.88.0 | affected |
| curl | curl | 7.87.0 <= 7.87.0 | affected |
| curl | curl | 7.86.0 <= 7.86.0 | affected |
| curl | curl | 7.85.0 <= 7.85.0 | affected |
| curl | curl | 7.84.0 <= 7.84.0 | affected |
| curl | curl | 7.83.1 <= 7.83.1 | affected |
| curl | curl | 7.83.0 <= 7.83.0 | affected |
| curl | curl | 7.82.0 <= 7.82.0 | affected |
Weaknesses
- CWE-923 Improper Restriction of Communication Channel to Intended Endpoints
References
- https://curl.se/docs/CVE-2026-13608.json
- https://curl.se/docs/CVE-2026-13608.html
- https://hackerone.com/reports/3822248
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