CVE-20XX-?
agent?

CVE-2026-43001

7.9 HIGH 0.5% exploit odds Fix listed Auth & access Server

What it is

An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied project_id for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credential for project A to create an EC2 credential targeting project B; a subsequent /v3/ec2tokens exchange would then issue a Keystone token scoped to project B while still carrying the original app_cred_id, enabling cross-project lateral movement within the credential owner's role footprint.

At a glance

Exploitability
Can be exploited over the network with an admin-level account. High risk of data exposure, data tampering.
Exploit odds
0.5% chance of exploitation in the next 30 days (EPSS).
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. PublishedDisclosed publicly on CVE.org and NVD
  2. Last updatedMost recent change to the record

Why it ranks here

Details

Published
Last modified
Exploit probability
0.5% · EPSS, next 30 days
Weakness
CWE-863 · Incorrect authorization
Record status
Modified

Affected

Attack profile CVSS 3.1 · 7.9

Attack vector
Network
Complexity
High
Privileges needed
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low
Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-43001.md and follow it. Check whether this project is affected by CVE-2026-43001. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record