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Not in CISA KEV
HIGH severity

GHSA-wxhm-2mq7-7697

HIGHFix: microsoft/prompty@88ac994

GHSA-wxhm-2mq7-7697 is a high-severity (CVSS 7.5) Path Traversal vulnerability in prompty. O3 Security confirms whether GHSA-wxhm-2mq7-7697 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Prompty: Arbitrary file read via file reference expansion

Also known asCVE-2026-53598PYSEC-2026-3538
Published
Jul 17, 2026
Updated
Jul 31, 2026
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Aug 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-wxhm-2mq7-7697.

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk+0.23%
Lower risk than most CVEs68th percentile — riskier than 68% of all scored CVEsHighest risk
0.56%0.97%1.38%1.79%1.1%1.3%Aug 26Aug 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-wxhm-2mq7-7697 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 366,357 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

4 pkgs affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
@prompty/corenpm
384downloads / week

Description

Summary

Prompty loaders expanded ${file:...} references in .prompty frontmatter without enforcing that the resolved path stayed within an authorized directory. An attacker-controlled prompt file could use path traversal or an absolute path to cause the host application to read files accessible to the process.

Affected packages

  • PyPI prompty versions <= 2.0.0b1; fixed in 2.0.0b2
  • npm @prompty/core versions <= 2.0.0-beta.1; fixed in 2.0.0-beta.2
  • crates.io prompty versions <= 2.0.0-beta.1; fixed in 2.0.0-beta.2
  • NuGet Prompty.Core versions <= 2.0.0-beta.1; fixed in 2.0.0-beta.2

Impact

Applications that load untrusted .prompty files, user-provided prompt paths, or prompt bundles from less-trusted locations could disclose local files available to the application process when expanded values are logged, returned, or otherwise exposed.

Remediation

Upgrade to the fixed runtime version for your ecosystem. The fix makes file references secure by default: ${file:...} may only resolve within the directory tree containing the .prompty file. Host applications that need shared prompt assets outside that tree must explicitly provide allowed file roots through runtime load options. Absolute paths, .. traversal, and symlink escapes outside allowed roots are rejected.

Fix details

The patched runtimes canonicalize file-reference targets and allowed roots before reading referenced files, reject targets outside the prompt directory by default, and add regression coverage for traversal, absolute paths, explicit allowlists, and symlink escapes. The release commit is 88ac9948d7d37995edbb2f6d36913436626c39e1.

Affected Packages

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iopromptyall versions2.0.0-beta.2
📦npm@prompty/coreall versions2.0.0-beta.2
.NETNuGetPrompty.Coreall versions2.0.0-beta.2
🐍PyPIpromptyall versions2.0.0b2

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for prompty. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update prompty to 2.0.0-beta.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wxhm-2mq7-7697 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-wxhm-2mq7-7697 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-wxhm-2mq7-7697. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

## Summary Prompty loaders expanded `${file:...}` references in `.prompty` frontmatter without enforcing that the resolved path stayed within an authorized directory. An attacker-controlled prompt file could use path traversal or an absolute path to cause the host application to read files accessible to the process. ## Affected packages - PyPI `prompty` versions `<= 2.0.0b1`; fixed in `2.0.0b2` - npm `@prompty/core` versions `<= 2.0.0-beta.1`; fixed in `2.0.0-beta.2` - crates.io `prompty` versions `<= 2.0.0-beta.1`; fixed in `2.0.0-beta.2` - NuGet `Prompty.Core` versions `<= 2.0.0-beta.1`; fi
O3 Security · Impact-Aware SCA

Is GHSA-wxhm-2mq7-7697 in your dependencies?

O3 detects GHSA-wxhm-2mq7-7697 across crates.io, npm, NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-wxhm-2mq7-7697: Prompty: Arbitrary… | O3 Security