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Kirki CVE-2026-65436

| EUVDEUVD-2026-49231 MEDIUM
Path Traversal (CWE-22)
2026-07-27 Patchstack GHSA-q7jw-4655-mjq2
6.8
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate as Editor on WordPress
  2. Delivery
    Send crafted request to Kirki file handler
  3. Exploit
    Supply path-traversal sequence to target file
  4. Execution
    Plugin deletes arbitrary file
  5. Impact
    Site disruption or forced reinstall

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK

2 techniques across 2 tactics: Discovery, Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires an authenticated WordPress user at Editor role (or a compromised/higher-privileged account) on a site running the Kirki plugin version 6.0.13 or earlier; per the CVSS PR:H metric this is not remotely reachable by anonymous users. No user interaction by a victim is needed (UI:N). Exploitation is limited by that privilege prerequisite and by the plugin actually being installed and active - Kirki is a theme customizer framework, so the site must ship or enable it. Impact is availability-only (file deletion), with no direct confidentiality or code-execution primitive from the flaw itself.

Impact

This is a moderate, not critical, priority. The CVSS 3.1 vector (AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H, base 6.8) shows a network-reachable, low-complexity flaw but one gated behind high privileges (PR:H) - per Patchstack's WordPress role mapping this corresponds to an authenticated Editor-level account, so exploitation presupposes a partially-trusted insider or a compromised Editor credential rather than an anonymous attacker. Signals are internally consistent and point away from urgency: EPSS is only 0.33% (25th percentile), SSVC records Exploitation:none, Automatable:no, Technical Impact:partial, there is no CISA KEV listing, and no public exploit was identified in the provided intelligence. The impact is confined to availability (C:N/I:N/A:H) - arbitrary deletion of files, which can break the site or, if sensitive files like wp-config.php are removed, force the site into a reinstall/takeover state (the likely justification for the S:C scope change). Net: a real but bounded issue whose privilege requirement and lack of exploitation evidence make it a routine patch rather than an emergency.

Exploit ScenarioDerived

An attacker who holds or has compromised a WordPress Editor account on a site running Kirki <= 6.0.13 submits a crafted request to the plugin's file-handling functionality, supplying a traversal path (CWE-22) to a file outside the intended directory. The plugin deletes the targeted file, allowing the actor to remove critical files (e.g., configuration or plugin files) and degrade or disable the site. No public exploit code was identified at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 16, 2026

Arbitrary file deletion in the Kirki WordPress plugin (versions up to and including 6.0.13) allows an authenticated user with Editor-level privileges to delete files on the server via a path traversal flaw (CWE-22). The vulnerability is not exploitable by unauthenticated attackers, requires no victim interaction, and has no public exploit identified at time of analysis (CISA KEV: not listed, EPSS 0.33%). The impact is limited to availability, as successful exploitation can remove files but does not expose data or enable code execution, making this a moderate-priority issue.

RemediationAI

No vendor-released patch is identified in the available data. Until an official fix is released, consider disabling or uninstalling the Kirki plugin if your theme does not require it, though this may break theme customizer functionality. Alternatively, restrict the Editor role by removing capabilities or reassigning users to lower-privileged roles, accepting reduced editorial workflow. Enforce strong authentication such as two-factor authentication for all users with Editor or higher privileges to prevent account compromise, since exploitation requires authenticated access. Monitor the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/kirki/vulnerability/wordpress-kirki-plugin-6-0-13-arbitrary-file-deletion-vulnerability?_s_id=cve) and the NVD entry (https://nvd.nist.gov/vuln/detail/CVE-2026-65436) for updates and apply the patch as soon as it becomes available. As a temporary measure, a WAF rule can block path traversal patterns in requests to the plugin's endpoints, but this may not cover all vectors and could cause false positives. Note that limiting privileged accounts significantly reduces risk.

Affected VersionsENISA

Kirki n/a ≤6.0.13

Affected Packages

euvd kirki no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a path traversal (CWE-22) in the Kirki plugin, a theme customizer framework for WordPress that is bundled with or used by many themes. The plugin's file handling logic fails to properly validate file paths, allowing an authenticated user at the Editor role (or a compromised higher-privileged account) to supply a crafted path that results in the deletion of arbitrary files on the underlying server. The CVSS vector indicates network attack vector, low attack complexity, high privileges required, and no user interaction; the independent assessment reassessed scope as unchanged (S:U) with low integrity (I:L) and high availability (A:H) impact, confirming the primary risk is disruption of site availability through file removal. The CPE cpe:2.3:a:themeum:kirki:*:*:*:*:*:*:*:* and tags (WordPress, Path Traversal, WordPress Plugin) identify the affected component as the Kirki plugin developed by Themeum.

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Severity by source

Vendor (Patchstack) PRIMARY 6.8 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
vuln.today AI 5.5 MEDIUM

Editor-only reachability sets PR:H; arbitrary deletion destroys data (I:L) and can down the site (A:H); scope kept U as the action stays within the WordPress host's authority.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

DescriptionCVE.org

Editor Arbitrary File Deletion in Kirki <= 6.0.13 versions.

Threat Intelligence Overview

EPSS Score
0.3%
Top 75% exploitable
Prevalence
High
widely-used WordPress customizer framework bundled by many themes
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.

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