# CVE-2026-11564

## Summary

- **CVE ID:** CVE-2026-11564
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-295
- **Published:** Jul 3, 2026
- **Last Modified:** Sep 17, 2026

## Description

libcurl keeps previously used connections in a connection pool for subsequent
transfers to reuse if one of them matches the setup.

An easy handle that first uses default native CA trust can continue trusting
the native platform store after the application switches that same handle to
custom CA material for a later transfer.

## Affected Products

- curl — curl (8.20.0)
- curl — curl (8.19.0)
- curl — curl (8.18.0)
- curl — curl (8.17.0)
- curl — curl (eefd03c572996e5de4dec4fe295ad6f103e0eefc)

## References

- [CNA](https://curl.se/docs/CVE-2026-11564.json)
- [CNA](https://curl.se/docs/CVE-2026-11564.html)
- [CNA](https://hackerone.com/reports/3788984)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 30.0

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