CVE-2021-24869Public exploitNetwork attack vector

Subscriber-level SQL injection via unvalidated post ID

Published Jan 16, 2024 · Updated Jun 2, 2025

SQL injection in Emre Vona WP Fastest Cache before 0.9.5 allows remote authenticated users to read or alter database data. SinglePreloadWPFC::set_id accepts the post query parameter, while set_urls_with_terms concatenates the value into a term_relationships query after a status check validates only its integer-cast form. Subscriber access and an active Classic Editor plugin are required; successful injection exposes privileged database content such as usernames and password hashes.

CVSS severity8.8
High
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Emre Vona WP Fastest Cache before 0.9.5 allows remote authenticated users to read or alter database data. SinglePreloadWPFC::set_id accepts the post query parameter, while set_urls_with_terms concatenates the value into a term_relationships query after a status check validates only its integer-cast form. Subscriber access and an active Classic Editor plugin are required; successful injection exposes privileged database content such as usernames and password hashes.

The record

CVE
CVE-2021-24869
Published
Jan 16, 2024
Updated
Jun 2, 2025
Vendor
Emre Vona
Product
WP Fastest Cache
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2025Record 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=0 <0.9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Emre Vona · WP Fastest Cacheversion=0 <0.9.5

Published CVSS scores

8.8CISACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
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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