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.

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

EPSS: 0.002 (9.8th percentile) — read the EPSS interpretation.

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.

Affected products

Yamadashy Repomix — versions < 1.14.1

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC, 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.