CVE-2026-29514

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-26997 (ENISA EUVD) · GHSA-f249-4qx6-hg68 (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

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
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.8%
EPSS %ILE
55th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines at low or medium mission impact and sooner than that at high; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 4, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated May 4, 2026
Fix referenced — no release confirmed yet.
Web page

NetBox 4.3.5 - 4.5.4 RCE via RenderTemplateMixin | Advisories | VulnCheck

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

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
Web page

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
Web page

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 / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 270 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 175 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  4. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-10-25 14:37 UTCEG score recompute
  8. 2026-10-24 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  9. 2026-10-24 07:07 UTCEG score recompute
  10. 2026-10-24 07:07 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-23 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  12. 2026-10-22 16:34 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  13. 2026-10-21 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  14. 2026-10-20 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  15. 2026-10-19 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  16. 2026-10-18 03:49 UTCEG score recompute
  17. 2026-10-17 16:33 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  18. 2026-10-17 16:09 UTCEG score recompute
  19. 2026-10-17 16:08 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  20. 2026-10-16 16:41 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  21. 2026-10-15 16:31 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  22. 2026-10-14 16:32 UTCEPSS rescoreEPSS 1.1% · 65th percentile
  23. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  24. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  25. 2026-10-12 16:16 UTCEG score recompute
Show 70 more
  1. 2026-10-11 19:58 UTCEG score recompute
  2. 2026-10-11 17:11 UTCEG score recompute
  3. 2026-10-11 14:41 UTCEG score recompute
  4. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  7. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  8. 2026-10-07 23:47 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-10-05 17:42 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  11. 2026-10-04 23:21 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  12. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  13. 2026-10-01 19:49 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  14. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  15. 2026-09-30 11:17 UTCOSV refresh
  16. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  17. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  18. 2026-09-26 00:26 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  19. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  25. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  26. 2026-09-11 18:10 UTCOSV refresh
  27. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  28. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  29. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  30. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  31. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  32. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  33. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  34. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  35. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  36. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  37. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  38. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  39. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  40. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  41. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  42. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  43. 2026-08-23 21:33 UTCEG score recompute
  44. 2026-08-23 21:33 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  46. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  47. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  48. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  49. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  50. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  51. 2026-08-17 13:12 UTCEG score recompute
  52. 2026-08-17 13:12 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  53. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  54. 2026-08-16 05:03 UTCEG score recompute
  55. 2026-08-16 05:03 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  56. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  57. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  58. 2026-08-14 15:21 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  59. 2026-08-14 03:38 UTCEG score recompute
  60. 2026-08-14 03:38 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  61. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  62. 2026-08-13 06:36 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  63. 2026-08-12 17:16 UTCEG score recompute
  64. 2026-08-12 17:16 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  65. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  66. 2026-08-11 16:10 UTCEG score recompute
  67. 2026-08-11 16:10 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8
  68. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  69. 2026-08-11 01:42 UTCEG score recompute
  70. 2026-08-11 01:42 UTCGHSA enrichmentGHSA-f249-4qx6-hg68 · GitHub severity HIGH · GitHub CVSS 8.8

Frequently asked(5)

What is CVE-2026-29514?
CVE-2026-29514 is a high-severity vulnerability; its CVE record was 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 made public?
CVE-2026-29514 was made public on May 1, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on May 4, 2026. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-29514 actively exploited?
CVE-2026-29514 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-29514?
CVE-2026-29514 has a CVSS base score of 8.8 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-29514?
A fix for CVE-2026-29514 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-29514 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-29514

Explore →

Is Your Infrastructure Affected by CVE-2026-29514?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.