Detections
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Curl 8.12.0 < 8.23.0 HTTP/2 Upload Use-After-Free

high Nessus Plugin ID 371160

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Synopsis

The remote host has a program that is affected by a use-after-free vulnerability.

Description

The version of curl installed on the remote host is 8.12.0 prior to 8.23.0. It is, therefore, affected by a use-after-free vulnerability:

 - During an upload, curl mishandles HTTP/2 RST_STREAM received from the server (with reason HTTP_1_1_REQUIRED or REFUSED_STREAM) leading to a use after free of a struct Curl_easy object.
 (CVE-2026-92392)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade Curl to version 8.23.0 or later.

See Also

https://curl.se/docs/CVE-2026-92392.html

Plugin Details

Severity: High

ID: 371160

File Name: curl_CVE-2026-92392.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 10/23/2026

Updated: 10/26/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.32

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-92392

Vulnerability Information

CPE: cpe:/a:haxx:curl

Required KB Items: installed_sw/Curl

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/14/2026

Vulnerability Publication Date: 10/14/2026

Reference Information

CVE: CVE-2026-92392

IAVA: 2026-A-1143