Fedora 45 : curl (2026-663a2d0ba4)

critical Nessus Plugin ID 362930

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Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-663a2d0ba4 advisory.

- fix HTTP/2 server push UAF (CVE-2026-18924)
- fix Negotiate ambient user conn reuse (CVE-2026-19931)
- remove test1701 - HTTP/2 Upgrade in a HTTP/1.1 POST request is no longer supported

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

Solution

Update the affected curl package.

Plugin Details

Severity: Critical

ID: 362930

File Name: fedora_2026-663a2d0ba4.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Fedora Local Security Checks

Published: 10/5/2026

Updated: 10/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-19931

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:45, p-cpe:/a:fedoraproject:fedora:curl

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/30/2026

Vulnerability Publication Date: 9/3/2026

Reference Information

CVE: CVE-2026-18924, CVE-2026-19931

FEDORA: 2026-663a2d0ba4

IAVA: 2026-A-0932

Detections

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