What’s Vulnerable › Vulnerabilities

CVE-2021-39328: Simple Job Board <= 2.9.4 Authenticated Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-21 · updated 2026-06-17
• Weakness: CWE-79

Description

The Simple Job Board WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $job_board_privacy_policy_label variable echo'd out via the ~/admin/settings/class-simple-job-board-settings-privacy.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.9.4. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

Affected products

• Simple Job Board: through 2.9.4

References

• https://github.com/BigTiger2020/word-press/blob/main/Simple%20Job%20Board%E2%80%94Stored%20Cross-Site%20Scripting%20-%202.md
• https://plugins.trac.wordpress.org/changeset/2617364/simple-job-board/trunk/admin/settings/class-simple-job-board-settings-privacy.php
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39328
• https://github.com/BigTiger2020/word-press/blob/main/Simple%20Job%20Board%E2%80%94Stored%20Cross-Site%20Scripting%20-%202.md
• https://plugins.trac.wordpress.org/changeset/2617364/simple-job-board/trunk/admin/settings/class-simple-job-board-settings-privacy.php
• https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39328

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