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No exploitation reportedFix available

CVE-2021-36916

No exploitation reported by the sources we read.

  • Published2021-11-24
  • WeaknessCWE-89

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The SQL injection vulnerability in the Hide My WP WordPress plugin (versions <= 6.2.3) is possible because of how the IP address is retrieved and used inside a SQL query. The function "hmwp_get_user_ip" tries to retrieve the IP address from multiple headers, including IP address headers that the user can spoof, such as "X-Forwarded-For." As a result, the malicious payload supplied in one of these IP address headers will be directly inserted into the SQL query, making SQL injection possible.

Timeline

dates in UTC
  1. 2021-11-2417:15CVE publishedNVD

Versions per branch

NVD
Wpwave hide my wp
BranchAffectedFixed in
6.2≤ 6.2.3no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As Patchstack, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • wpWave Hide My WP (WordPress plugin)
    Affected
    • ≥ <= 6.2.3, ≤ 6.2.3no fix statedcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-11-24

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2025-03-28
  • CNACVSS 3.18.6known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • CNAweakness (CWE)CWE-89known since 2026-10-23
  • NVDweakness (CWE)CWE-89read 2026-10-23
  • FIRST EPSSEPSS score1.9 %2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-11-24
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-53q2-99ph-73wh

Frequently asked questions

What is CVE-2021-36916?

The SQL injection vulnerability in the Hide My WP WordPress plugin (versions <= 6.2.3) is possible because of how the IP address is retrieved and used inside a SQL query. The function "hmwp_get_user_ip" tries to retrieve the IP address from multiple headers, including IP address headers that the user can spoof, such as "X-Forwarded-For." As a result, the malicious payload supplied in one of these IP address headers will be directly inserted into the SQL query, making SQL injection possible.

Is CVE-2021-36916 actively exploited?

Active exploitation of CVE-2021-36916 has not been confirmed. Its EPSS score was 1.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-36916?

CVE-2021-36916 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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