CVE-2021-24523Network attack vector

Stored script execution via unescaped settings

Published Sep 13, 2021 · Updated Aug 3, 2024

Stored cross-site scripting in mmrs151 Daily Prayer Time before 2021.08.10 allows remote authenticated users to inject scripts via plugin settings. The affected settings are stored without sanitization and later emitted into generated pages without output escaping; public records do not identify the individual fields or code path. Administrator access is required to store a payload, and execution occurs when another user visits a page that renders the affected setting.

CVSS severity5.4
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in mmrs151 Daily Prayer Time before 2021.08.10 allows remote authenticated users to inject scripts via plugin settings. The affected settings are stored without sanitization and later emitted into generated pages without output escaping; public records do not identify the individual fields or code path. Administrator access is required to store a payload, and execution occurs when another user visits a page that renders the affected setting.

The record

CVE
CVE-2021-24523
Published
Sep 13, 2021
Updated
Aug 3, 2024
Vendor
mmrs151
Product
Daily Prayer Time
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 13, 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=2021.08.10 <2021.08.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

mmrs151 · Daily Prayer Timeversion=2021.08.10 <2021.08.10

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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