CVE-2026-54363

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-30. the CNA's CVSS baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

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

CentreStack before 17.5 contains a hardcoded cryptographic key vulnerability that allows unauthenticated attackers to forge arbitrary encrypted tokens by exploiting a static SysNumber value used as entropy for AccessTicket.Encrypt() and AccessTicket.Decrypt() across all installations. Attackers can use the hardcoded key to craft valid x-glad-auth headers and call privileged API endpoints such as acquiretenantbackuptoken to obtain a domain administrator IdentityTicket, enabling a complete unauthenticated remote code execution chain.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: 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
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

July 30, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

CentreStack < 17.5 Hardcoded Key Token Forgery RCE | Advisories | VulnCheck

https://www.vulncheck.com/advisories/centrestack-hardcoded-key-token-forgery-rce
generic

CentreStack: Grow Your MSP with Your Branded File Solution

https://www.centrestack.com/

Vendor Advisories for CVE-2026-54363(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 43× in last 7d / 230× 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 240 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-54363?
CVE-2026-54363 is a critical vulnerability published on July 30, 2026. CentreStack before 17.5 contains a hardcoded cryptographic key vulnerability that allows unauthenticated attackers to forge arbitrary encrypted tokens by exploiting a static SysNumber value used as entropy for AccessTicket.Encrypt() and AccessTicket.Decrypt() across all installations. Attackers can…
When was CVE-2026-54363 disclosed?
CVE-2026-54363 was first published in the National Vulnerability Database on July 30, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54363 actively exploited?
CVE-2026-54363 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 67.6% of all scored CVEs.
What is the CVSS score of CVE-2026-54363?
CVE-2026-54363 has a CVSS v4.0 base score of 9.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-54363?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54363, 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

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