Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cnrs | Hal | <= 2.1.1 |
Related Weaknesses (CWE)
References
- https://github.com/BigTiger2020/word-press/blob/main/HAL.mdExploitThird Party Advisory
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&oldPatchThird Party Advisory
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39345Third Party Advisory
- https://github.com/BigTiger2020/word-press/blob/main/HAL.mdExploitThird Party Advisory
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&oldPatchThird Party Advisory
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39345Third Party Advisory
FAQ
What is CVE-2021-39345?
CVE-2021-39345 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 attacker...
How severe is CVE-2021-39345?
CVE-2021-39345 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-39345?
Check the references section above for vendor advisories and patch information. Affected products include: Cnrs Hal.