CVE-2021-47872Public exploitNetwork attack vector

Authenticated database extraction via order_col SQL injection

Published Jan 21, 2026 · Updated Jan 21, 2026

Blind SQL injection in Seo Panel 4.8.0 allows remote authenticated users to extract database information through archive.php. archive.php incorporates the attacker-controlled order_col value into a database query, so a supplied SLEEP subquery changes server response time. Access to the SEO administration panel is required; the time-based oracle exposes database contents without directly returning query results.

CVSS severity7.1
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Blind SQL injection in Seo Panel 4.8.0 allows remote authenticated users to extract database information through archive.php. archive.php incorporates the attacker-controlled order_col value into a database query, so a supplied SLEEP subquery changes server response time. Access to the SEO administration panel is required; the time-based oracle exposes database contents without directly returning query results.

The record

CVE
CVE-2021-47872
Published
Jan 21, 2026
Updated
Jan 21, 2026
Vendor
Seo Panel
Product
Seo Panel
Classifications
CWE-89, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Seo Panel · Seo Panelversion=4.8.0

Published CVSS scores

7.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
7.0VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA: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 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')
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo