CVE-2026-33157 Vulnerability Analysis & Exploit Details

CVE-2026-33157
Vulnerability Scoring

7.2
/10
Very High Risk

Highly exploitable, CVE-2026-33157 poses a critical security risk that could lead to severe breaches.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-33157 Details

Status: Analyzed

Last updated: 🕔 26 Mar 2026, 17:08 UTC
Originally published on: 🕕 24 Mar 2026, 18:16 UTC

Time between publication and last update: 1 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2026-33157 Vulnerability Summary

CVE-2026-33157: Craft CMS is a content management system (CMS). From version 5.6.0 to before version 5.9.13, a Remote Code Execution (RCE) vulnerability exists in Craft CMS, it can be exploited by any authenticated user with control panel access. This is a bypass of a previous fix. The existing patches add cleanseConfig() to assembleLayoutFromPost() and various FieldsController actions to strip Yii2 behavior/event injection keys ("as" and "on" prefixed keys). However, the fieldLayouts parameter in ElementIndexesController::actionFilterHud() is passed directly to FieldLayout::createFromConfig() without any sanitization, enabling the same behavior injection attack chain. This issue has been patched in version 5.9.13.

Assessing the Risk of CVE-2026-33157

Access Complexity Graph

The exploitability of CVE-2026-33157 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-33157

The exploitability of CVE-2026-33157 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-33157, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-33157, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-33157 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2026-33157 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2026-33157 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-33157 References

External References

CWE Common Weakness Enumeration

CWE-470

CAPEC Common Attack Pattern Enumeration and Classification

  • Reflection Injection CAPEC-138 An adversary supplies a value to the target application which is then used by reflection methods to identify a class, method, or field. For example, in the Java programming language the reflection libraries permit an application to inspect, load, and invoke classes and their components by name. If an adversary can control the input into these methods including the name of the class/method/field or the parameters passed to methods, they can cause the targeted application to invoke incorrect methods, read random fields, or even to load and utilize malicious classes that the adversary created. This can lead to the application revealing sensitive information, returning incorrect results, or even having the adversary take control of the targeted application.

Vulnerable Configurations

  • cpe:2.3:a:craftcms:craft_cms:5.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.5:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.6:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.6:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.7:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.7:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.8:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.8:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.9:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.9:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.10:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.10:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.11:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.11:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.12:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.12:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.13:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.13:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.14:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.14:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.15:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.15:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.16:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.16:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.6.17:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.6.17:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.0:-:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.0:-:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.0:beta1:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.0:beta1:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.0:beta2:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.0:beta2:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.4:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.4:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.5:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.6:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.6:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.7:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.7:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.8:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.8:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.9:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.9:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.10:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.10:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.7.11:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.7.11:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.3:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.3:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.4:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.4:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.5:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.5:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.6:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.6:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.7:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.7:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.8:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.8:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.9:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.9:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.10:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.10:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.11:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.11:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.12:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.12:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.13:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.13:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.13.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.13.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.13.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.13.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.14:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.14:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.15:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.15:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.16:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.16:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.17:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.17:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.18:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.18:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.19:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.19:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.20:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.20:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.21:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.21:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.22:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.22:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.8.23:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.8.23:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.0:-:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.0:-:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.0:beta1:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.0:beta1:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.0:beta2:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.0:beta2:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.3:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.3:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.4:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.4:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.5:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.5:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.6:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.6:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.7:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.7:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.8:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.8:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.9:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.9:*:*:*:*:*:*:*
  • cpe:2.3:a:craftcms:craft_cms:5.9.10:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:craft_cms:5.9.10:*:*:*:*:*:*:*

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