CVE-2021-24137Public exploitNetwork attack vector

Arbitrary SQL execution via unvalidated post ID

Published Mar 18, 2021 · Updated Aug 3, 2024

SQL injection in Blog2Social before 6.3.1 allows remote authenticated users to execute arbitrary SQL through Re-Share Posts. The b2s_delete_re_post_sched AJAX action accepts the postId request value and uses it in a database operation without validation. An authenticated WordPress account and access to the action nonce are required; successful exploitation can read, modify, or delete site database content.

CVSS severity8.8
High
EPSS probability1.50%
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 Blog2Social before 6.3.1 allows remote authenticated users to execute arbitrary SQL through Re-Share Posts. The b2s_delete_re_post_sched AJAX action accepts the postId request value and uses it in a database operation without validation. An authenticated WordPress account and access to the action nonce are required; successful exploitation can read, modify, or delete site database content.

The record

CVE
CVE-2021-24137
Published
Mar 18, 2021
Updated
Aug 3, 2024
Vendor
Adenion GmbH
Product
Blog2Social
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 18, 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=6.3.1 <6.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Adenion GmbH · Blog2Socialversion=6.3.1 <6.3.1

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

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-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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