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HIGH

CVE-2026-53598

CVSS v3

7.5

HIGH

EPSS Score

1.1 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 2.0.0-beta.2, Prompty loaders expanded ${file:...} references in .prompty frontmatter without enforcing that resolved paths stayed within the prompt directory or allowed roots, allowing an attacker-controlled prompt file to read local files through absolute paths, .. traversal, or symlink escapes. This issue is fixed in versions 2.0.0-beta.2.

Technical details

CVSS v3 Vector
3.1
Published
2026-07-16
Last Modified
2026-07-17
GitHub Advisory
GHSA-wxhm-2mq7-7697

Frequently asked questions

What is CVE-2026-53598?

Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 2.0.0-beta.2, Prompty loaders expanded ${file:...} references in .prompty frontmatter without enforcing that resolved paths stayed within the prompt directory or allowed roots, allowing an attacker-controlled prompt file to read local files through absolute paths, .. traversal, or symlink escapes. This issue is fixed in versions 2.0.0-beta.2.

Is CVE-2026-53598 actively exploited?

Active exploitation of CVE-2026-53598 has not been confirmed. The EPSS score is 1.1%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-53598?

CVE-2026-53598 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string 3.1.

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