Detections
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Chainguard: nextcloud-server-35: security update to 35.0.2-r0

high Tenable Cloud Security Plugin ID 477759

Description

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

 - Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to
 versions 5.4.54, 6.4.46, 7.4.19, and 8.1.7, HeaderUtils::split() parsed header values with a pattern whose
 token alternative also matched whitespace, followed by a (?<!\s) lookbehind. A run of whitespace placed
 before a separator could be divided among the iterations of the enclosing repetition in exponentially many
 ways, and the engine tried all of them before settling. HeaderBag calls it for the Cache-Control header
 whenever a Request is built, so any application handling HTTP requests is reachable, with no
 authentication. A single request carrying such a header costs close to a second of CPU (813 ms for a run
 of 17 spaces in an 8 KB header on PHP 8.5, doubling with each extra space). From 18 spaces on,
 preg_match_all() gives up at pcre.backtrack_limit and split() returns an empty array, so every directive
 of the header is silently dropped. This issue affects symfony/http-foundation v4.1.0-BETA1 through
 v5.4.53, v6.0.0-BETA1 through v6.4.45, v7.0.0-BETA1 through v7.4.18, and v8.0.0-BETA1 through v8.1.6.
 (CVE-2026-108082)

Solution

Update the nextcloud-server-35 library and its related packages to version 35.0.2-r0 or later.

Plugin Details

Severity: High

ID: 477759

Version: Revision 1.2

Type: Local

Published: 10/29/2026

Updated: 10/29/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-108082

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/15/2026

Reference Information

CVE: CVE-2026-108082