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VulnerabilityPublished Updated

CVE-2026-49988: repomix · attach_packed_output can bypass file-read secret scanning for supported local files

Affects repomixSource GCVE Database

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Authoritative record:CVE-2026-49988· Medium 6.8

Not known to be exploited · CVSS 6.8 Medium : upgrade to 1.14.1 when convenient.

Data as of 9 Nov 2026, 19:48 UTC

CVSS 4.0 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.14.1
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Upgrade repomix to 1.14.1.

Affected software

ProductAffectedFixed in
Homebrewrepomixpkg:brew/repomixOther threatsAffected
  • >=0.2.1 <1.14.1
Fixed in
  • 1.14.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in repomix version 1.14.1. Users should upgrade to this version or later to ensure that attach_packed_output enforces the same secret scanning and validation as the file_system_read_file tool. Until patched, restrict MCP tool-call capability to trusted users and environments to prevent unauthorized local file reads.

Description

Repomix MCP server's attach_packed_output tool can bypass secret scanning when reading local .json, .txt, .md, or .xml files. This allows reading arbitrary local files without the secret check enforced by the file_system_read_file tool. The issue affects repomix versions from 0.2.1 up to but not including 1.14.1 and is fixed in version 1.14.1.

References

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