What is the CVSS score of CVE-2026-27411?

CVE-2026-27411 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-27411?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

CVE-2026-27411

MEDIUM

Guessable CAPTCHA (CWE-804)

2026-03-05 audit@patchstack.com

Authentication Bypass

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 10:22 NVD

5.3 (MEDIUM) 5.4 (MEDIUM)

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 05, 2026 - 06:16 nvd

MEDIUM 5.3

DescriptionCVE.org

Guessable CAPTCHA vulnerability in jp-secure SiteGuard WP Plugin siteguard allows Functionality Bypass.This issue affects SiteGuard WP Plugin: from n/a through <= 1.7.9.

AnalysisAI

The SiteGuard WP Plugin for WordPress through version 1.7.9 contains a guessable CAPTCHA implementation that allows attackers to bypass security protections without authentication. This vulnerability enables attackers to circumvent the plugin's functionality controls and potentially gain unauthorized access to protected resources or perform actions that should be restricted.

Technical ContextAI

Affects the siteguard allows component of jp-secure SiteGuard WP Plugin siteguard. Guessable CAPTCHA vulnerability in jp-secure SiteGuard WP Plugin siteguard allows Functionality Bypass.This issue affects SiteGuard WP Plugin: from n/a through <= 1.7.9.