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SCA: security update for flarum/core (GHSA-5qjq-69w6-fg57)

critical Tenable Cloud Security Plugin ID 410981

Description

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

 - Flarum is a forum software for building communities. Flarum's translation system allowed for string inputs
 to be converted into HTML DOM nodes when rendered. This change was made after v0.1.0-beta.16 (our last
 beta before v1.0.0) and was not noticed or documented. This allowed for any user to type malicious HTML
 markup within certain user input fields and have this execute on client browsers. The example which led to
 the discovery of this vulnerability was in the forum search box. Entering faux-malicious HTML markup, such
 as <script>alert('test')</script> resulted in an alert box appearing on the forum. This attack could also
 be modified to perform AJAX requests on behalf of a user, possibly deleting discussions, modifying their
 settings or profile, or even modifying settings on the Admin panel if the attack was targetted towards a
 privileged user. All Flarum communities that run flarum v1.0.0 or v1.0.1 are impacted. The vulnerability
 has been fixed and published as flarum/core v1.0.2. All communities running Flarum v1.0 have to upgrade as
 soon as possible to v1.0.2. (CVE-2021-32671)

See Also

https://github.com/advisories/GHSA-5qjq-69w6-fg57

Plugin Details

Severity: Critical

ID: 410981

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 95.11

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2021-32671

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/7/2021

Vulnerability Publication Date: 6/7/2021

Reference Information

CVE: CVE-2021-32671

cwe: CWE-79