CVE-2021-24550Public exploitNetwork attack vector

Database disclosure via unescaped URL-edit parameter

Published Aug 23, 2021 · Updated Aug 3, 2024

SQL injection in flashcentury Broken Link Manager 0.6.5 and earlier allows remote authenticated users to read database data via an admin request. The URL-edit handler inserts the url GET parameter into a SQL statement without sanitization, validation, or escaping. Administrator-level access to wp-admin is required; a crafted UNION query can disclose data returned by the database.

CVSS severity7.2
High
EPSS probability1.58%
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 flashcentury Broken Link Manager 0.6.5 and earlier allows remote authenticated users to read database data via an admin request. The URL-edit handler inserts the url GET parameter into a SQL statement without sanitization, validation, or escaping. Administrator-level access to wp-admin is required; a crafted UNION query can disclose data returned by the database.

The record

CVE
CVE-2021-24550
Published
Aug 23, 2021
Updated
Aug 3, 2024
Vendor
flashcentury
Product
Broken Link Manager
Classifications
CWE-89
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 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=0.6.5 <=0.6.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

flashcentury · Broken Link Managerversion=0.6.5 <=0.6.5

Published CVSS scores

6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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