CVE-2021-24504Public exploitNetwork attack vector

Unauthenticated stored XSS via unsanitized field titles

Published Aug 2, 2021 · Updated Aug 3, 2024

Stored XSS in JoomSky WP Learn Manager 1.1.2 and earlier allows remote attackers to execute script in an administrator's browser. The jslm_fieldordering saveuserfield task accepts fieldtitle from a POST request, stores it without sanitization, and renders it without escaping. No CSRF or capability check is required to store the payload, but an administrator must visit the affected page to trigger it.

CVSS severity6.1
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in JoomSky WP Learn Manager 1.1.2 and earlier allows remote attackers to execute script in an administrator's browser. The jslm_fieldordering saveuserfield task accepts fieldtitle from a POST request, stores it without sanitization, and renders it without escaping. No CSRF or capability check is required to store the payload, but an administrator must visit the affected page to trigger it.

The record

CVE
CVE-2021-24504
Published
Aug 2, 2021
Updated
Aug 3, 2024
Vendor
JoomSky
Product
WP Learn Manager
Classifications
CWE-79, CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1.1.2 <=1.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JoomSky · WP Learn Managerversion=1.1.2 <=1.1.2

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-352Cross-Site Request Forgery (CSRF)
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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