CVE-2026-44466

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 86% 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
Elevated
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.6Exploit: NoneExposed: 0

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

Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed via bash arithmetic expansion $((...)), allowing execution of arbitrary commands nested inside an allowlisted command like echo. This vulnerability is fixed in 0.229.0.

CVSS v3
8.6
EG Score
8.6(medium)
EPSS
14.0%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 2, 2026

Advisory Details (1)

Auto-updated May 28, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Allowlist Bypass via Bash Arithmetic Expansion in Terminal Tool Permissions · Advisory · zed-industries/zed · GitHub

Affected: v0.229.0.

https://github.com/zed-industries/zed/security/advisories/GHSA-c99f-97vf-4h5h

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 53× 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.

Showing the most recent 100 of 108 total refreshes for this CVE.

  1. 2026-07-16 02:55 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-13 22:30 UTCEPSS rescore
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  11. 2026-07-08 15:16 UTCEPSS rescore
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  21. 2026-06-30 23:22 UTCEPSS rescore
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  24. 2026-06-29 13:41 UTCEG score recompute
  25. 2026-06-28 19:15 UTCEG score recompute
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  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 06:39 UTCEG score recompute
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 18:07 UTCEG score recompute
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  7. 2026-06-26 16:46 UTCEG score recompute
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  11. 2026-06-25 08:04 UTCEG score recompute
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  22. 2026-06-18 17:52 UTCEPSS rescore
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  26. 2026-06-17 05:44 UTCEG score recompute
  27. 2026-06-16 17:52 UTCEPSS rescore
  28. 2026-06-16 17:12 UTCEG score recompute
  29. 2026-06-16 04:39 UTCEG score recompute
  30. 2026-06-15 17:49 UTCEPSS rescore
  31. 2026-06-15 16:06 UTCEG score recompute
  32. 2026-06-15 03:33 UTCEG score recompute
  33. 2026-06-14 15:00 UTCEG score recompute
  34. 2026-06-14 02:27 UTCEG score recompute
  35. 2026-06-13 23:00 UTCEPSS rescore
  36. 2026-06-13 13:56 UTCEG score recompute
  37. 2026-06-13 01:21 UTCEG score recompute
  38. 2026-06-12 23:12 UTCEPSS rescore
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  40. 2026-06-12 12:50 UTCEG score recompute
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  42. 2026-06-11 14:00 UTCEPSS rescore
  43. 2026-06-11 11:45 UTCEG score recompute
  44. 2026-06-10 23:13 UTCEG score recompute
  45. 2026-06-10 22:18 UTCEPSS rescore
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  48. 2026-06-10 10:42 UTCEG score recompute
  49. 2026-06-09 22:10 UTCEG score recompute
  50. 2026-06-09 09:37 UTCEG score recompute
  51. 2026-06-08 21:05 UTCEG score recompute
  52. 2026-06-08 14:17 UTCEPSS rescore
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  54. 2026-06-08 08:33 UTCEG score recompute
  55. 2026-06-07 20:01 UTCEG score recompute
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  58. 2026-06-06 13:47 UTCEPSS rescore
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  60. 2026-06-06 06:25 UTCEG score recompute
  61. 2026-06-05 22:47 UTCEPSS rescore
  62. 2026-06-05 17:53 UTCEG score recompute
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  64. 2026-06-04 16:49 UTCEG score recompute
  65. 2026-06-04 13:12 UTCEPSS rescore
  66. 2026-06-04 13:12 UTCEPSS rescore
  67. 2026-06-04 04:17 UTCEG score recompute
  68. 2026-06-03 15:45 UTCEG score recompute
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  70. 2026-06-02 20:13 UTCEPSS rescore
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  72. 2026-06-02 02:09 UTCEG score recompute
  73. 2026-06-01 13:52 UTCEPSS rescore
  74. 2026-06-01 13:52 UTCEPSS rescore
  75. 2026-06-01 13:37 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-44466?
CVE-2026-44466 is a high vulnerability published on May 28, 2026. Zed is a code editor. Prior to 0.229.0, Zed's terminal tool permission system can be bypassed via bash arithmetic expansion $((...)), allowing execution of arbitrary commands nested inside an allowlisted command like echo. This vulnerability is fixed in 0.229.0.
When was CVE-2026-44466 disclosed?
CVE-2026-44466 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44466 actively exploited?
CVE-2026-44466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44466?
CVE-2026-44466 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-44466?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44466, 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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