CVE-2026-6356

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-22. NVD baseline CVSS 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: Elevated riskExposed: 0

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

A vulnerability in the web application allows standard users to escalate their privileges to those of a super administrator through parameter manipulation, enabling them to access and modify sensitive information.

CVSS v3
9.6
EG Score
9.6(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity96% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

April 22, 2026

Last Modified

May 12, 2026

Advisory Details (1)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

GitHub - Penguinsecq/CVE-2026-6356: Exploit PoC of CVE-2026-6356 · GitHub

https://github.com/Penguinsecq/CVE-2026-6356/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 27× 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 253 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-6356?
CVE-2026-6356 is a critical vulnerability published on April 22, 2026. A vulnerability in the web application allows standard users to escalate their privileges to those of a super administrator through parameter manipulation, enabling them to access and modify sensitive information.
When was CVE-2026-6356 disclosed?
CVE-2026-6356 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6356 actively exploited?
CVE-2026-6356 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 78.9% of all scored CVEs.
What is the CVSS score of CVE-2026-6356?
CVE-2026-6356 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-6356?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6356, 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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