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VulnerabilityPublished

CVE-2026-54557: jdx mise · Path Traversal

Affects jdx miseSource CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium : upgrade to 2026.6.1 when convenient.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2026.6.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Jun 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 8 Nov 2026.

What to do

Upgrade mise and jdx/mise to 2026.6.1.

Affected software

ProductAffectedFixed in
jdxmiseAffected
  • <2026.6.1
Fixed in
  • 2026.6.1
GitHubjdx/misepkg:github/jdx/miseOther threatsAffected
  • <2026.6.1
Fixed in
  • 2026.6.1

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 mise version 2026.6.1. Users should upgrade to this version or later to remediate the vulnerability. No other vendor advisories or temporary mitigations are provided. Until upgrading, avoid using untrusted .tool-versions files to prevent exploitation.

Description

mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.6.1, the mise HTTP backend builds its install symlink destination from the raw resolved version string for non-latest versions. Normal tool install paths use the sanitized version pathname, but the HTTP backend's symlink path uses the raw value. On Unix-like systems, if that version is an absolute path, PathBuf::join discards the intended mise installs root. A repository-controlled .tool-versions file can therefore make mise install create a symlink outside the mise install tree. With bin_path, the same issue can place an executable symlink under an attacker-selected absolute prefix, such as a developer-tool prefix that is later added to PATH. This vulnerability is fixed in 2026.6.1.

References

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