CVE-2021-24806Public exploitNetwork attack vector

Comment tampering via unchecked AJAX requests

Published Nov 8, 2021 · Updated Aug 3, 2024

Cross-site request forgery in AdvancedCoding wpDiscuz before 7.3.4 allows remote attackers to alter comments through logged-in users. The wpdAddComment, wpdDeleteComment, and wpdSaveEditedComment AJAX actions accept state-changing requests without validating a CSRF nonce. Exploitation requires a logged-in user to submit an attacker-controlled request; the user's permissions bound which comments can be added, edited, or deleted.

CVSS severity4.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in AdvancedCoding wpDiscuz before 7.3.4 allows remote attackers to alter comments through logged-in users. The wpdAddComment, wpdDeleteComment, and wpdSaveEditedComment AJAX actions accept state-changing requests without validating a CSRF nonce. Exploitation requires a logged-in user to submit an attacker-controlled request; the user's permissions bound which comments can be added, edited, or deleted.

The record

CVE
CVE-2021-24806
Published
Nov 8, 2021
Updated
Aug 3, 2024
Vendor
AdvancedCoding
Product
wpDiscuz
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 8, 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=7.3.4 <7.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AdvancedCoding · wpDiscuzversion=7.3.4 <7.3.4

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 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-352Cross-Site Request Forgery (CSRF)

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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