CVE-2026-30305

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-30. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

Syntx's command auto-approval module contains a critical OS command injection vulnerability that renders its whitelist security mechanism completely ineffective. The system relies on fragile regular expressions to parse command structures; while it attempts to intercept dangerous operations, it fails to account for standard Shell command substitution syntax (specifically $(...)and backticks ...). An attacker can construct a command such as git log --grep="$(malicious_command)", forcing Syntx to misidentify it as a safe git operation and automatically approve it. The underlying Shell prioritizes the execution of the malicious code injected within the arguments, resulting in Remote Code Execution without any user interaction.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
63.1%
KEV
Not listed

Published

March 30, 2026

Last Modified

April 8, 2026

Advisory Details (2)

Auto-updated May 18, 2026
No patch confirmed yet.
generic

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https://syntx.dev/
generic

Syntx Remote Code Execution Vulnerability · Issue #5 · Secsys-FDU/LLM-Tool-Calling-CVEs · GitHub

https://github.com/Secsys-FDU/LLM-Tool-Calling-CVEs/issues/5

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 40× 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 133 total refreshes for this CVE.

  1. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-16 17:03 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-12 05:46 UTCEPSS rescore
  11. 2026-07-11 08:27 UTCEPSS rescore
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-08 15:15 UTCEPSS rescore
  14. 2026-07-07 13:46 UTCEPSS rescore
  15. 2026-07-06 16:27 UTCEPSS rescore
  16. 2026-07-06 16:27 UTCEPSS rescore
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-05 02:30 UTCEPSS rescore
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-01 15:06 UTCEPSS rescore
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-28 04:56 UTCEPSS rescore
  25. 2026-06-27 03:08 UTCEPSS rescore
Show 75 more
  1. 2026-06-25 13:49 UTCEPSS rescore
  2. 2026-06-25 13:49 UTCEPSS rescore
  3. 2026-06-24 14:05 UTCEPSS rescore
  4. 2026-06-23 21:33 UTCEPSS rescore
  5. 2026-06-23 21:33 UTCEPSS rescore
  6. 2026-06-22 14:25 UTCEPSS rescore
  7. 2026-06-22 14:25 UTCEPSS rescore
  8. 2026-06-21 14:56 UTCEPSS rescore
  9. 2026-06-21 14:56 UTCEPSS rescore
  10. 2026-06-21 01:59 UTCEPSS rescore
  11. 2026-06-19 19:25 UTCEPSS rescore
  12. 2026-06-19 19:25 UTCEPSS rescore
  13. 2026-06-18 17:52 UTCEPSS rescore
  14. 2026-06-18 17:52 UTCEPSS rescore
  15. 2026-06-17 17:53 UTCEPSS rescore
  16. 2026-06-16 17:52 UTCEPSS rescore
  17. 2026-06-15 17:49 UTCEPSS rescore
  18. 2026-06-13 23:00 UTCEPSS rescore
  19. 2026-06-12 23:12 UTCEPSS rescore
  20. 2026-06-12 23:12 UTCEPSS rescore
  21. 2026-06-12 06:05 UTCEG score recompute
  22. 2026-06-12 06:05 UTCGHSA enrichment
  23. 2026-06-12 02:24 UTCEG score recompute
  24. 2026-06-12 02:24 UTCGHSA enrichment
  25. 2026-06-11 22:46 UTCEG score recompute
  26. 2026-06-11 22:46 UTCGHSA enrichment
  27. 2026-06-11 14:00 UTCEPSS rescore
  28. 2026-06-10 22:18 UTCEPSS rescore
  29. 2026-06-10 22:18 UTCEPSS rescore
  30. 2026-06-10 21:52 UTCEG score recompute
  31. 2026-06-10 21:52 UTCGHSA enrichment
  32. 2026-06-10 18:12 UTCEG score recompute
  33. 2026-06-10 18:12 UTCGHSA enrichment
  34. 2026-06-10 14:34 UTCEG score recompute
  35. 2026-06-10 14:34 UTCGHSA enrichment
  36. 2026-06-10 13:22 UTCEPSS rescore
  37. 2026-06-10 08:51 UTCEG score recompute
  38. 2026-06-10 08:51 UTCGHSA enrichment
  39. 2026-06-10 05:13 UTCEG score recompute
  40. 2026-06-10 05:13 UTCGHSA enrichment
  41. 2026-06-10 01:34 UTCEG score recompute
  42. 2026-06-10 01:34 UTCGHSA enrichment
  43. 2026-06-09 18:51 UTCEG score recompute
  44. 2026-06-09 18:51 UTCGHSA enrichment
  45. 2026-06-09 15:13 UTCEG score recompute
  46. 2026-06-09 15:13 UTCGHSA enrichment
  47. 2026-06-08 14:17 UTCEPSS rescore
  48. 2026-06-08 14:17 UTCEPSS rescore
  49. 2026-06-08 13:23 UTCEG score recompute
  50. 2026-06-08 13:23 UTCGHSA enrichment
  51. 2026-06-08 09:45 UTCEG score recompute
  52. 2026-06-08 09:45 UTCGHSA enrichment
  53. 2026-06-08 05:58 UTCEG score recompute
  54. 2026-06-08 05:58 UTCGHSA enrichment
  55. 2026-06-08 02:21 UTCEG score recompute
  56. 2026-06-08 02:21 UTCGHSA enrichment
  57. 2026-06-07 22:43 UTCEG score recompute
  58. 2026-06-07 22:43 UTCGHSA enrichment
  59. 2026-06-07 19:06 UTCEG score recompute
  60. 2026-06-07 19:06 UTCGHSA enrichment
  61. 2026-06-07 15:25 UTCEPSS rescore
  62. 2026-06-07 15:25 UTCEPSS rescore
  63. 2026-06-07 15:25 UTCEPSS rescore
  64. 2026-06-07 15:20 UTCEG score recompute
  65. 2026-06-07 15:20 UTCGHSA enrichment
  66. 2026-06-07 11:42 UTCEG score recompute
  67. 2026-06-07 11:42 UTCGHSA enrichment
  68. 2026-06-06 13:47 UTCEPSS rescore
  69. 2026-06-06 13:47 UTCEPSS rescore
  70. 2026-06-05 22:47 UTCEPSS rescore
  71. 2026-06-05 22:47 UTCEPSS rescore
  72. 2026-06-05 06:10 UTCEPSS rescore
  73. 2026-06-05 06:10 UTCEPSS rescore
  74. 2026-06-04 13:12 UTCEPSS rescore
  75. 2026-06-04 13:12 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-30305?
CVE-2026-30305 is a critical vulnerability published on March 30, 2026. Syntx's command auto-approval module contains a critical OS command injection vulnerability that renders its whitelist security mechanism completely ineffective. The system relies on fragile regular expressions to parse command structures; while it attempts to intercept dangerous operations, it…
When was CVE-2026-30305 disclosed?
CVE-2026-30305 was first published in the National Vulnerability Database on March 30, 2026, with the most recent update on April 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-30305 actively exploited?
CVE-2026-30305 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-30305?
CVE-2026-30305 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-30305?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-30305, 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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