What is CVE-2022-0993?

CVE-2022-0993 is a high-severity vulnerability in Siteground Security Optimizer – The All-In-One Protection Plugin, classified under Improper Authorization. CVSS score: 8.1/10. Published 2022-04-19.

How severe is CVE-2022-0993?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2022-0993 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Siteground Security Optimizer – The All-In-One Protection Plugin

CVE-2022-0993

The SiteGround Security plugin for WordPress is vulnerable to authentication bypass that allows unauthenticated users to log in as administrative users due to missing identity verification on the 2FA back-up code implementation that logs users in upon success. This affects versions up to, and including, 1.2.5.

Published 2022-04-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.075 (94.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.073 · newest: 0.075 · change: +0.003

Affected products

Siteground Security Optimizer – The All-In-One Protection Plugin — versions 0
Siteground Security

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-0993?: CVE-2022-0993 is a high-severity vulnerability in Siteground Security Optimizer – The All-In-One Protection Plugin, classified under Improper Authorization. CVSS score: 8.1/10. Published 2022-04-19.
How severe is CVE-2022-0993?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2022-0993 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.