SiteGround Security <= 1.2.5 - Authorization Weakness to Authentication Bypass

published 2022-04-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-15986

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 7.5%; EPSS 7.5% chance of exploitation in 30 days, percentile 94%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-10-15)

Exploit prediction

7.54% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

siteground Security Optimizer – The All-In-One Protection Plugin

Classification

Weakness

CWE-285 Improper Authorization
CWE-306 Missing Authentication for Critical Functionality

Technology feeds

WordPress rss critical rss

References

Sources

CVE List CVE-2022-0993
NVD CVE-2022-0993

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary