CVE-2026-41134 Vulnerability Analysis & Exploit Details

CVE-2026-41134
Vulnerability Scoring

7.8

/10

Very High Risk

Highly exploitable, CVE-2026-41134 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: Local
Vulnerability requires local system access.
Privileges Required: Low
Some privileges are necessary to exploit the vulnerability.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2026-41134 Details

Status: Analyzed

Last updated: 🕘 14 May 2026, 21:23 UTC
Originally published on: 🕘 22 Apr 2026, 21:17 UTC

Time between publication and last update: 22 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2026-41134 Vulnerability Summary

CVE-2026-41134: Kiota is an OpenAPI based HTTP Client code generator. Versions prior to 1.31.1 are affected by a code-generation literal injection vulnerability in multiple writer sinks (for example: serialization/deserialization keys, path/query parameter mappings, URL template metadata, enum/property metadata, and default value emission). When malicious values from an OpenAPI description are emitted into generated source without context-appropriate escaping, an attacker can break out of string literals and inject additional code into generated clients. This issue is only practically exploitable when the OpenAPI description used for generation is from an untrusted source, or a normally trusted OpenAPI description has been compromised/tampered with. Only generating from trusted, integrity-protected API descriptions significantly reduces the risk. To remediate the issue, upgrade Kiota to 1.31.1 or later and regenerate/refresh existing generated clients as a precaution. Refreshing generated clients ensures previously generated vulnerable code is replaced with hardened output.

Assessing the Risk of CVE-2026-41134

Access Complexity Graph

The exploitability of CVE-2026-41134 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-2026-41134

CVE-2026-41134 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

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-2026-41134, 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-2026-41134, 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-2026-41134 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: High
CVE-2026-41134 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: High
CVE-2026-41134 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-41134 References

External References

https://github.com/microsoft/kiota/security/advisories/GHSA-2hx3-vp6r-mg3f

CWE Common Weakness Enumeration

CWE-94

CAPEC Common Attack Pattern Enumeration and Classification

Code Injection CAPEC-242 An adversary exploits a weakness in input validation on the target to inject new code into that which is currently executing. This differs from code inclusion in that code inclusion involves the addition or replacement of a reference to a code file, which is subsequently loaded by the target and used as part of the code of some application.
Leverage Executable Code in Non-Executable Files CAPEC-35 An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
Manipulating User-Controlled Variables CAPEC-77 This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An adversary can override variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the adversary can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Vulnerable Configurations

cpe:2.3:a:microsoft:kiota:0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.4:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.4:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.10:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.10:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.11:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.11:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.12:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.12:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.13:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.13:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.14:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.14:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.15:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.15:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.16:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.16:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.17:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.17:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.18:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.18:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.19:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.19:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.20:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.20:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.21:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.21:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.22:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.22:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.23:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.0.23:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.1.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.7.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.8.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.9.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.9.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.10.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.11.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.11.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:0.11.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.9.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.10.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.10.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.11.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.11.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.13.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.13.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.16.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.16.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.17.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.17.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.18.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.18.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.19.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.19.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.19.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.19.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.20.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.20.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.21.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.21.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.22.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.23.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.23.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.24.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.25.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.25.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.26.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.26.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.26.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.26.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.27.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.27.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.28.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.28.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.29.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.29.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.30.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.30.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.31.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:kiota:1.31.0:*:*:*:*:*:*:*

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