Google: net-misc/curl: security update to 18244.582.47

medium Tenable Self-Hosted Container Security Plugin ID 451200

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated
HTTP or HTTPS request. libcurl features a pool of recent connections so that subsequent requests can reuse
an existing connection to avoid overhead. When reusing a connection a range of criterion must first be
met. Due to a logical error in the code, a request that was issued by an application could wrongfully
reuse an existing connection to the same server that was authenticated using different credentials. One
underlying reason being that Negotiate sometimes authenticates *connections* and not *requests*, contrary
to how HTTP is designed to work. An application that allows Negotiate authentication to a server (that
responds wanting Negotiate) with `user1:password1` and then does another operation to the same server also
using Negotiate but with `user2:password2` (while the previous connection is still alive) - the second
request wrongly reused the same connection and since it then sees that the Negotiate negotiation is
already made, it sends the request over that connection thinking it uses the user2 credentials when it is
in fact still using the connection authenticated for user1... The set of authentication methods to use is
set with `CURLOPT_HTTPAUTH`. Applications can disable libcurl's reuse of connections and thus mitigate
this problem, by using one of the following libcurl options to alter how connections are or are not
reused: `CURLOPT_FRESH_CONNECT`, `CURLOPT_MAXCONNECTS` and `CURLMOPT_MAX_HOST_CONNECTIONS` (if using the
curl_multi API). (CVE-2026-1965)

Solution

Update the net-misc/curl library and its related packages to version 18244.582.47 or later.

Plugin Details

Severity: Medium

ID: 451200

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-1965

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/11/2026

Reference Information

CVE: CVE-2026-1965

Detections

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