CVE-2026-125271
Last modified
CVE-2026-125271 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Incorrect normalization of operation names in the custom security policy enforcement in awslabs aws-api-mcp-server before 1.5.1 might allow an actor to execute AWS API operations across AWS services that the operator's security policy was configured to deny or require elicitation for, via calls to operations whose names contain consecutive capital letters. To remediate this issue, users should upgrade to version 1.5.1..
Description
Incorrect normalization of operation names in the custom security policy enforcement in awslabs aws-api-mcp-server before 1.5.1 might allow an actor to execute AWS API operations across AWS services that the operator's security policy was configured to deny or require elicitation for, via calls to operations whose names contain consecutive capital letters. To remediate this issue, users should upgrade to version 1.5.1.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| AWS | aws-api-mcp-server | >= 0.2.13, < 1.5.1 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-125271?
How severe is CVE-2026-125271?
How do I fix CVE-2026-125271?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-125266FFmpeg through 9.0.2 contains an uninitialized stack memory …3.3
- CVE-2026-125267FFmpeg before 8.1.3 and 9.x before 9.0.2 contains a heap out…7.8
- CVE-2026-125268FFmpeg through 9.0.2 contains an uninitialized memory disclo…3.3
- CVE-2026-125269FFmpeg through 9.0.2 contains a double free vulnerability in…7
- CVE-2026-12527A broken authorization boundary in the RTSP media delivery p…6
- CVE-2026-125270FFmpeg through 9.0.2 contains a heap out-of-bounds read vuln…5.3
- CVE-2026-12528A flaw was found in 389 Directory Server in the __aclp__norm…5.4
- CVE-2026-12529A security vulnerability has been detected in SourceCodester…7.3
- CVE-2026-1253The Group Chat & Video Chat by AtomChat plugin for WordPress…4.3
- CVE-2026-12530Improper neutralization of argument delimiters in the instal…7.3
- CVE-2026-12535Improperly Controlled Modification of Dynamically-Determined…9.8
- CVE-2026-125357Munin munin-httpd 2.99.1 through 2.999.18 contains a path tr…5.3
Are you affected by CVE-2026-125271?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST