CVE-2026-66018

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-07-27. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Build readers can access another repository's environment properties. A caller with read access to an ordinary repository can select a readable repository parameter while retrieving environment properties for a protected build, exposing build environment secrets (confidentiality impact; no integrity or availability impact demonstrated).

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 30, 2026

Advisory Details (2)

Auto-updated Jul 27, 2026
No patch confirmed yet.

Vendor Advisories for CVE-2026-66018(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 13× in last 7d / 77× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:50 UTCEG score recompute
  3. 2026-08-29 23:50 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-27 09:42 UTCEG score recompute
  6. 2026-08-27 09:42 UTCGHSA enrichment
  7. 2026-08-26 14:47 UTCEPSS rescore
  8. 2026-08-26 05:31 UTCEG score recompute
  9. 2026-08-26 05:31 UTCGHSA enrichment
  10. 2026-08-25 13:49 UTCEPSS rescore
  11. 2026-08-25 03:50 UTCEG score recompute
  12. 2026-08-25 03:50 UTCGHSA enrichment
  13. 2026-08-24 02:25 UTCGHSA enrichment
  14. 2026-08-23 00:29 UTCEG score recompute
  15. 2026-08-23 00:29 UTCGHSA enrichment
  16. 2026-08-23 00:19 UTCEPSS rescore
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 23:04 UTCEG score recompute
  19. 2026-08-21 23:04 UTCGHSA enrichment
  20. 2026-08-20 22:56 UTCEPSS rescore
  21. 2026-08-20 21:39 UTCGHSA enrichment
  22. 2026-08-19 20:14 UTCEG score recompute
  23. 2026-08-19 20:14 UTCGHSA enrichment
  24. 2026-08-19 17:04 UTCEPSS rescore
  25. 2026-08-18 18:46 UTCEG score recompute
Show 65 more
  1. 2026-08-18 18:46 UTCGHSA enrichment
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-17 14:44 UTCEG score recompute
  4. 2026-08-17 14:44 UTCGHSA enrichment
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 13:20 UTCEG score recompute
  8. 2026-08-16 13:20 UTCGHSA enrichment
  9. 2026-08-15 11:56 UTCEG score recompute
  10. 2026-08-15 11:56 UTCGHSA enrichment
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 10:31 UTCEG score recompute
  13. 2026-08-14 10:31 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 09:06 UTCEG score recompute
  16. 2026-08-13 09:06 UTCGHSA enrichment
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-12 07:42 UTCEG score recompute
  19. 2026-08-12 07:42 UTCGHSA enrichment
  20. 2026-08-11 06:17 UTCEG score recompute
  21. 2026-08-11 06:17 UTCGHSA enrichment
  22. 2026-08-11 00:00 UTCEPSS rescore
  23. 2026-08-10 04:53 UTCEG score recompute
  24. 2026-08-10 04:53 UTCGHSA enrichment
  25. 2026-08-09 13:47 UTCEPSS rescore
  26. 2026-08-09 03:29 UTCEG score recompute
  27. 2026-08-09 03:29 UTCGHSA enrichment
  28. 2026-08-08 16:37 UTCEPSS rescore
  29. 2026-08-08 02:05 UTCEG score recompute
  30. 2026-08-08 02:05 UTCGHSA enrichment
  31. 2026-08-07 00:40 UTCEG score recompute
  32. 2026-08-07 00:40 UTCGHSA enrichment
  33. 2026-08-06 13:47 UTCEPSS rescore
  34. 2026-08-05 23:16 UTCEG score recompute
  35. 2026-08-05 23:16 UTCGHSA enrichment
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-04 21:52 UTCEG score recompute
  39. 2026-08-04 21:52 UTCGHSA enrichment
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:39 UTCEPSS rescore
  42. 2026-08-03 20:27 UTCEG score recompute
  43. 2026-08-03 20:27 UTCGHSA enrichment
  44. 2026-08-03 10:36 UTCEPSS rescore
  45. 2026-08-02 19:03 UTCEG score recompute
  46. 2026-08-02 19:03 UTCGHSA enrichment
  47. 2026-08-02 02:27 UTCEPSS rescore
  48. 2026-08-01 17:39 UTCEG score recompute
  49. 2026-08-01 17:39 UTCGHSA enrichment
  50. 2026-08-01 04:16 UTCEPSS rescore
  51. 2026-07-31 16:14 UTCEG score recompute
  52. 2026-07-31 16:14 UTCGHSA enrichment
  53. 2026-07-30 16:28 UTCEPSS rescore
  54. 2026-07-30 14:49 UTCEG score recompute
  55. 2026-07-30 14:49 UTCGHSA enrichment
  56. 2026-07-30 01:30 UTCEPSS rescore
  57. 2026-07-30 00:31 UTCGHSA enrichment
  58. 2026-07-28 23:04 UTCEG score recompute
  59. 2026-07-28 23:04 UTCGHSA enrichment
  60. 2026-07-28 15:37 UTCEPSS rescore
  61. 2026-07-27 21:38 UTCEG score recompute
  62. 2026-07-27 21:37 UTCGHSA enrichment
  63. 2026-07-27 20:20 UTCEG score recompute
  64. 2026-07-27 19:55 UTCEG score recompute
  65. 2026-07-27 19:54 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-66018?
CVE-2026-66018 is a medium vulnerability published on July 27, 2026. Build readers can access another repository's environment properties. A caller with read access to an ordinary repository can select a readable repository parameter while retrieving environment properties for a protected build, exposing build environment secrets (confidentiality impact; no…
When was CVE-2026-66018 disclosed?
CVE-2026-66018 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66018 actively exploited?
CVE-2026-66018 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.2% of all scored CVEs.
What is the CVSS score of CVE-2026-66018?
CVE-2026-66018 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-66018?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66018, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-66018

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