CVE-2021-39334Public exploitNetwork attack vector

Stored script execution via unsanitized job settings

Published Oct 15, 2021 · Updated Feb 14, 2025

Stored cross-site scripting in Perception System Job Board Vanila Plugin 1.0 allows remote authenticated users to execute scripts in browsers. job-settings.php accepts the psjb_exp_in and psjb_curr_in setting values without sufficient validation or sanitization and stores the injected markup. Administrator access is required, and the flaw affects sites where unfiltered_html is disabled, including multisite installations.

CVSS severity5.5
Medium
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored cross-site scripting in Perception System Job Board Vanila Plugin 1.0 allows remote authenticated users to execute scripts in browsers. job-settings.php accepts the psjb_exp_in and psjb_curr_in setting values without sufficient validation or sanitization and stores the injected markup. Administrator access is required, and the flaw affects sites where unfiltered_html is disabled, including multisite installations.

The record

CVE
CVE-2021-39334
Published
Oct 15, 2021
Updated
Feb 14, 2025
Vendor
Perception System
Product
Job Board Vanila Plugin
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Perception System · Job Board Vanila Pluginversion=1.0

Published CVSS scores

5.5WordfenceCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo