Path Traversal Vulnerability in Prompty by Microsoft
CVE-2026-53598

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Prompty
Vendor
CVE Published:
16 July 2026

What is CVE-2026-53598?

Prompty, a markdown file format for LLM prompts, allows attackers to exploit unprotected path references. Versions before 2.0.0-beta.2 do not enforce directory restrictions on resolved paths, potentially enabling unauthorized access to local files. Attackers can leverage absolute paths, directory traversal mechanisms, or symlink escapes to read sensitive data. This vulnerability has been remedied in version 2.0.0-beta.2.

Affected Version(s)

prompty < 2.0.0-beta.2

References

https://github.com/microsoft/prompty/security/advisories/...
x_refsource_CONFIRM
https://github.com/microsoft/prompty/commit/88ac9948d7d37...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.