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Sucuri WordPress Plugin EUVDEUVD-2026-55803

| CVE-2026-73033 HIGH
Path Traversal (CWE-22)
2026-08-10 VulnCheck GHSA-vxwv-hcj3-j79g
PHP Path Traversal WordPress Sucuri Wordpress Plugin
7.0
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
7.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.5 MEDIUM

Network delivery via wp-admin (AV:N), no complexity barriers (AC:L), administrator session required (PR:H), file deletion yields high integrity and availability impact with zero confidentiality loss.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 10, 2026 - 20:46 vuln.today
CVE Published
Aug 10, 2026 - 20:15 cve.org
HIGH 7.0

DescriptionCVE.org

Sucuri Security WordPress plugin through version 2.7.3 contains a path traversal vulnerability in the pageIntegritySubmission() method in src/integrity.lib.php that allows authenticated administrators to delete arbitrary files by supplying directory traversal sequences in the sucuriscan_integrity parameter. Attackers can manipulate the unsanitized file path concatenated with ABSPATH to traverse outside the WordPress installation directory and invoke unlink() on sensitive files such as wp-config.php and .htaccess, causing site outage or enabling malicious reinstallation.

Articles & Coverage 2

News 6 New PHP Vulnerabilities - 3 Critical, 2 With POC Aug 11, 2026 News 8 New WordPress Vulnerabilities - 1 Critical, 7 High, All With POC Aug 11, 2026

AnalysisAI

Path traversal in the Sucuri Security WordPress plugin through version 2.7.3 allows authenticated administrators to delete arbitrary files outside the WordPress installation directory. The pageIntegritySubmission() method in src/integrity.lib.php concatenates the unsanitized sucuriscan_integrity parameter directly with ABSPATH before passing it to PHP's unlink(), enabling traversal sequences to reach sensitive files such as wp-config.php and .htaccess. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain WordPress admin credentials
Delivery
Authenticate to wp-admin dashboard
Exploit
Submit crafted sucuriscan_integrity traversal payload
Execution
Plugin concatenates payload with ABSPATH unsanitized
Persist
unlink() deletes target file (e.g., wp-config.php)
Impact
Site goes offline or attacker enables reinstallation takeover
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated WordPress administrator session - the CVSS 4.0 vector confirms PR:H (high privileges). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H) scores 7.0, reflecting network reachability and high integrity/availability impact but tempered by the PR:H (high privilege) requirement. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained WordPress administrator credentials - through phishing, credential stuffing, or brute-force against a site with weak admin passwords - logs into the WordPress dashboard and triggers the Sucuri plugin's integrity check submission with a crafted sucuriscan_integrity value such as ../../../../wp-config.php. The plugin resolves the path to the actual wp-config.php file and calls unlink() on it, deleting the database configuration file and rendering the site inaccessible. …
Remediation Upstream fix available (PR/commit referenced at https://github.com/Sucuri/sucuri-wordpress-plugin/issues/217); a released patched version is not independently confirmed from the available intelligence - monitor the WordPress plugin repository and the GitHub issue for an official tagged release. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, audit all WordPress installations to identify Sucuri Security plugin version 2.7.3 and below; restrict administrative access through firewall rules or role-based permissions, and enable detailed WordPress admin activity logging. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-55803 vulnerability details – vuln.today
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