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Malmö WordPress Theme CVE-2026-39558

| EUVDEUVD-2026-37675 HIGH
PHP Remote File Inclusion (CWE-98)
2026-06-17 Patchstack
8.1
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
8.1 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.0 HIGH

Network-reachable unauthenticated LFI (AV:N/PR:N/UI:N); AC:H reflects non-trivial conditions; high confidentiality, but integrity and availability impact only realistic if LFI is chained to RCE.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
Analysis Generated
Jun 17, 2026 - 12:23 vuln.today

DescriptionCVE.org

Unauthenticated Local File Inclusion in Malmö <= 2.2 versions.

AnalysisAI

Unauthenticated local file inclusion in the Malmö WordPress theme versions 2.2 and earlier allows remote attackers to include arbitrary local files via crafted requests, enabling disclosure of sensitive server-side content and potentially remote code execution. The flaw is reported by Patchstack and classified as CWE-98 (improper control of filename for include/require), with no public exploit identified at time of analysis. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify site running Malmö theme
Delivery
Send crafted request to theme endpoint
Exploit
Traverse path to sensitive file
Execution
PHP include reads target file
Impact
Disclose credentials or escalate to code execution

Vulnerability AssessmentAI

Exploitation The target WordPress site must have the elated-themes Malmö theme installed and active at version 2.2 or earlier, and the vulnerable theme endpoint (a PHP include/require sink reachable from a theme-served URL or AJAX action) must be network-reachable to the attacker. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector AV:N/AC:H/PR:N/UI:N indicates a network-reachable, unauthenticated vulnerability with high impact on confidentiality, integrity, and availability, but with high attack complexity - implying non-trivial conditions (specific parameters, encoding, or environment) are needed to exploit reliably. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker sends a crafted HTTP GET or POST request to a theme-handled endpoint with a manipulated filename parameter pointing to a sensitive file such as wp-config.php or /etc/passwd, causing the PHP include sink to read and disclose the file's contents. If the attacker can stage controlled content (uploaded media, log poisoning) and reference it through the inclusion path, the LFI can be escalated to PHP code execution under the webserver user. …
Remediation No vendor-released patch identified at time of analysis from the provided references - the only cited source is the Patchstack database entry at https://patchstack.com/database/wordpress/theme/malmo/vulnerability/wordpress-malmoe-theme-2-2-local-file-inclusion-vulnerability, which should be consulted for an updated fix version once published by elated-themes. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

24 hours: Inventory all WordPress instances for Malmö theme v2.2 or earlier; immediately deactivate or remove theme from non-critical production sites pending mitigation. …

Sign in for detailed remediation steps and compensating controls.

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

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CVE-2026-39558 vulnerability details – vuln.today

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