CVE-2026-29514

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-04. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

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

NetBox versions 4.3.5 through 4.5.4 contain a remote code execution vulnerability in the RenderTemplateMixin.get_environment_params() method that allows authenticated users with exporttemplate or configtemplate permissions to execute arbitrary code by specifying malicious Python callables in the environment_params field. Attackers can bypass Jinja2 SandboxedEnvironment protections by setting the finalize parameter to any importable Python callable such as subprocess.getoutput, which is invoked on every rendered expression outside the sandbox's call interception mechanism, achieving remote code execution as the NetBox service user.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
51.8%
KEV
Not listed

Published

May 4, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

NetBox 4.3.5 - 4.5.4 RCE via RenderTemplateMixin | Advisories | VulnCheck

https://www.vulncheck.com/advisories/netbox-rce-via-rendertemplatemixin
generic

Restrict Jinja environment_params path imports to an allowlist (CVE-2026-29514) by Chocapikk · Pull Request #22078 · netbox-community/netbox · GitHub

https://github.com/netbox-community/netbox/pull/22078
generic

Authenticated RCE via Jinja2 sandbox bypass in RenderTemplateMixin environment_params (CVE-2026-29514) · Issue #22079 · netbox-community/netbox · GitHub

https://github.com/netbox-community/netbox/issues/22079
generic

CVE-2026-29514: NetBox Jinja2 Sandbox Bypass to RCE via RenderTemplateMixin environment_params - Chocapikk's Cybersecurity Blog

https://chocapikk.com/posts/2026/netbox-export-template-rce/

Vendor Advisories for CVE-2026-29514(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 10× in last 7d / 45× 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 145 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-29514?
CVE-2026-29514 is a high vulnerability published on May 4, 2026. NetBox versions 4.3.5 through 4.5.4 contain a remote code execution vulnerability in the RenderTemplateMixin.getenvironmentparams() method that allows authenticated users with exporttemplate or configtemplate permissions to execute arbitrary code by specifying malicious Python callables in the…
When was CVE-2026-29514 disclosed?
CVE-2026-29514 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29514 actively exploited?
CVE-2026-29514 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-29514?
CVE-2026-29514 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-29514?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29514, 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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