# CVE-2026-13608

## Summary

- **CVE ID:** CVE-2026-13608
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-923
- **Published:** Sep 6, 2026
- **Last Modified:** Sep 16, 2026

## 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.

## Affected Products

- curl — curl (8.17.0)
- curl — curl (8.21.0)
- curl — curl (8.20.0)
- curl — curl (8.19.0)
- curl — curl (8.18.0)
- curl — curl (8.16.0)
- curl — curl (8.15.0)
- curl — curl (8.14.1)
- curl — curl (8.14.0)
- curl — curl (8.13.0)
- curl — curl (8.12.1)
- curl — curl (8.12.0)
- curl — curl (8.11.1)
- curl — curl (8.11.0)
- curl — curl (8.10.1)
- curl — curl (8.10.0)
- curl — curl (8.9.1)
- curl — curl (8.9.0)
- curl — curl (8.8.0)
- curl — curl (8.7.1)
- curl — curl (8.7.0)
- curl — curl (8.6.0)
- curl — curl (8.5.0)
- curl — curl (8.4.0)
- curl — curl (8.3.0)
- curl — curl (8.2.1)
- curl — curl (8.2.0)
- curl — curl (8.1.2)
- curl — curl (8.1.1)
- curl — curl (8.1.0)
- curl — curl (8.0.1)
- curl — curl (8.0.0)
- curl — curl (7.88.1)
- curl — curl (7.88.0)
- curl — curl (7.87.0)
- curl — curl (7.86.0)
- curl — curl (7.85.0)
- curl — curl (7.84.0)
- curl — curl (7.83.1)
- curl — curl (7.83.0)
- curl — curl (7.82.0)
- curl — curl (eeca818b1e8d1e61c2d4d833aed56ce4c510a9d4)

## References

- [CNA](https://curl.se/docs/CVE-2026-13608.json)
- [CNA](https://curl.se/docs/CVE-2026-13608.html)
- [CNA](https://hackerone.com/reports/3822248)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.64%
- **EPSS Percentile:** 49.3

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._