CVE-2026-55448

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

mise manages dev tools like node, python, cmake, and terraform. From 2026.3.15 until 2026.6.4, mise loads github.credential_command from local project config before any trust decision, then executes that value with sh -c when resolving a GitHub token. An attacker who can place a .mise.toml in a repository can execute arbitrary shell commands when the victim runs a GitHub-related mise command and no higher-priority GitHub token environment variable is set. This vulnerability is fixed in 2026.6.4.

CVSS v3
6.3
EG Score
6.3(medium)
EPSS
5.4%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 27, 2026

Advisory Details (1)

Auto-updated Jun 26, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Local credential_command executes untrusted config · Advisory · jdx/mise · GitHub

https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph

Vendor Advisories for CVE-2026-55448(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 18:42 UTCEG score recompute
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-05 19:59 UTCEG score recompute
  7. 2026-07-04 21:43 UTCEG score recompute
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-03 23:27 UTCEG score recompute
  11. 2026-07-03 01:11 UTCEG score recompute
  12. 2026-07-02 02:55 UTCEG score recompute
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-07-01 04:40 UTCEG score recompute
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-30 06:23 UTCEG score recompute
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 08:08 UTCEG score recompute
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 09:52 UTCEG score recompute
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 11:37 UTCEG score recompute
  25. 2026-06-26 13:21 UTCEG score recompute
Show 3 more
  1. 2026-06-25 15:05 UTCEG score recompute
  2. 2026-06-24 16:49 UTCEG score recompute
  3. 2026-06-23 18:31 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-55448?
CVE-2026-55448 is a medium vulnerability published on June 23, 2026. mise manages dev tools like node, python, cmake, and terraform. From 2026.3.15 until 2026.6.4, mise loads github.credential_command from local project config before any trust decision, then executes that value with sh -c when resolving a GitHub token. An attacker who can place a .mise.toml in a…
When was CVE-2026-55448 disclosed?
CVE-2026-55448 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on June 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55448 actively exploited?
CVE-2026-55448 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55448?
CVE-2026-55448 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-55448?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55448, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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