CVE-2021-39345

Published: Oct 15, 2021Modified: Jun 17, 2026

4.8

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Exploitability: 1.7 / Impact: 2.7

Source: NVD

Description

The HAL WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/wp-hal.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.1.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Affected (1)

Products: Cnrs: Hal

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Cnrs Hal	Up to 2.1.1

Related CWEs

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (6)

https://github.com/BigTiger2020/word-press/blob/main/HAL.md

Source: security@wordfence.com

ExploitThird Party Advisory

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614075%40hal&new=2614075%40hal&sfp_email=&sfph_mail=

Source: security@wordfence.com

PatchThird Party Advisory

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39345

Source: security@wordfence.com

Third Party Advisory

https://github.com/BigTiger2020/word-press/blob/main/HAL.md

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614075%40hal&new=2614075%40hal&sfp_email=&sfph_mail=

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39345

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.