CVE-2026-75431

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 1%CVSS: 9.1Exploit: None knownExposed: 0

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

PowerJob Server version 5.1.2 (and likely earlier) uses a predictable JWT signing key for HS256-based authentication. This allows a remote attacker to execute arbitrary code.

CVSS v3
9.1
EG Score
9.1(high)
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%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

PowerJob/powerjob-server/powerjob-server-starter/src/main/resources/application-daily.properties at master · PowerJob/PowerJob · GitHub

https://github.com/PowerJob/PowerJob/blob/master/powerjob-server/powerjob-server-starter/src/main/resources/application-daily.properties
generic

PowerJob/powerjob-server/powerjob-server-auth/src/main/java/tech/powerjob/server/auth/jwt/impl/JwtServiceImpl.java at master · PowerJob/PowerJob · GitHub

https://github.com/PowerJob/PowerJob/blob/master/powerjob-server/powerjob-server-auth/src/main/java/tech/powerjob/server/auth/jwt/impl/JwtServiceImpl.java
generic

PowerJob/powerjob-server/powerjob-server-auth/src/main/java/tech/powerjob/server/auth/jwt/impl/DefaultSecretProvider.java at master · PowerJob/PowerJob · GitHub

https://github.com/PowerJob/PowerJob/blob/master/powerjob-server/powerjob-server-auth/src/main/java/tech/powerjob/server/auth/jwt/impl/DefaultSecretProvider.java
generic

PowerJob/docker-compose.yml at master · PowerJob/PowerJob · GitHub

https://github.com/PowerJob/PowerJob/blob/master/docker-compose.yml
generic🟡 PoC Available

CVE-2026-75431 - PowerJob Server Predictable JWT Signing Key Remote Code Execution · GitHub

https://gist.github.com/unpredictable21/39e6ce22e4bc45b0e553d0fa6a6e4d1c

Vendor Advisories for CVE-2026-75431(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 51× in last 7d / 116× 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 116 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-75431?
CVE-2026-75431 is a critical vulnerability published on September 4, 2026. PowerJob Server version 5.1.2 (and likely earlier) uses a predictable JWT signing key for HS256-based authentication. This allows a remote attacker to execute arbitrary code.
When was CVE-2026-75431 disclosed?
CVE-2026-75431 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75431 actively exploited?
CVE-2026-75431 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 45.8% of all scored CVEs.
What is the CVSS score of CVE-2026-75431?
CVE-2026-75431 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-75431?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75431, 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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