CVE-2021-24894Public exploitNetwork attack vector

Review-section crash via unbounded rating value

Published Nov 23, 2021 · Updated Aug 3, 2024

Denial of service in impleCode Reviews Plus before 1.2.14 allows remote authenticated users to crash displayed review sections. The review renderer processes an unbounded ic_review_rating value, exhausting PHP memory in functions/functions.php. Subscriber access and enabled review display are required; viewing the affected post or page then crashes its review section.

CVSS severity6.5
Medium
EPSS probability1.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in impleCode Reviews Plus before 1.2.14 allows remote authenticated users to crash displayed review sections. The review renderer processes an unbounded ic_review_rating value, exhausting PHP memory in functions/functions.php. Subscriber access and enabled review display are required; viewing the affected post or page then crashes its review section.

The record

CVE
CVE-2021-24894
Published
Nov 23, 2021
Updated
Aug 3, 2024
Vendor
impleCode
Product
Reviews Plus
Classifications
CWE-20, CWE-191, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 23, 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=1.2.14 <1.2.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

impleCode · Reviews Plusversion=1.2.14 <1.2.14

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:N/A:P
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-191Integer Underflow (Wrap or Wraparound)
T1499.004Application or System Exploitation

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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