Information disclosure in Yamadashy Repomix
CVE-2026-49988
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (7.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Yamadashy Repomix — versions < 1.14.1
Weakness classification (CWE)
References
- github.com/yamadashy/repomix/security/advisories/GHSA-hwpp-h97w-2h3j (Exploit, Vendor Advisory)
- github.com/yamadashy/repomix/commit/e447f7dba6f51fdb26bcad0c280542fca291960e (Patch)
- github.com/yamadashy/repomix/releases/tag/v1.14.1 (Release Notes)
Frequently asked questions
- What is CVE-2026-49988?
- CVE-2026-49988 is a medium-severity vulnerability in Yamadashy Repomix, classified under Information Disclosure. CVSS score: 5.5/10. Published 2026-07-15.
- How severe is CVE-2026-49988?
- Medium severity. CVSS v3 base score is 5.5 out of 10.