CVE-2026-20239

HIGHNVD 6.57.5▲
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-20. NVD baseline CVSS 6.5; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5EG
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.

In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the _internal index could view session cookies and response bodies that contain sensitive data.

CVSS v3
6.5
EG Score
7.5(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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 7, 2026
No patch confirmed yet.
generic

SVD-2026-0503 | Splunk Vulnerability Disclosure

https://advisory.splunk.com/advisories/SVD-2026-0503

Vendor Advisories for CVE-2026-20239(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 9× in last 7d / 73× 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 226 total refreshes for this CVE.

  1. 2026-08-27 14:25 UTCEPSS rescore
  2. 2026-08-26 14:46 UTCEPSS rescore
  3. 2026-08-25 13:48 UTCEPSS rescore
  4. 2026-08-23 16:53 UTCEG score recompute
  5. 2026-08-23 16:53 UTCGHSA enrichment
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-21 23:49 UTCEPSS rescore
  8. 2026-08-21 22:53 UTCEG score recompute
  9. 2026-08-21 22:53 UTCGHSA enrichment
  10. 2026-08-20 22:55 UTCEPSS rescore
  11. 2026-08-20 18:54 UTCEG score recompute
  12. 2026-08-20 18:54 UTCGHSA enrichment
  13. 2026-08-19 17:03 UTCEPSS rescore
  14. 2026-08-18 13:48 UTCEPSS rescore
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 09:52 UTCGHSA enrichment
  17. 2026-08-16 16:52 UTCEG score recompute
  18. 2026-08-16 16:52 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 03:29 UTCEG score recompute
  21. 2026-08-16 03:29 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 01:56 UTCEG score recompute
  24. 2026-08-15 01:56 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 75 more
  1. 2026-08-14 13:58 UTCGHSA enrichment
  2. 2026-08-14 02:01 UTCEG score recompute
  3. 2026-08-14 02:01 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 02:12 UTCGHSA enrichment
  6. 2026-08-12 14:15 UTCEG score recompute
  7. 2026-08-12 14:15 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 01:49 UTCGHSA enrichment
  10. 2026-08-11 13:51 UTCEG score recompute
  11. 2026-08-11 13:51 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 01:33 UTCEG score recompute
  14. 2026-08-11 01:33 UTCGHSA enrichment
  15. 2026-08-11 00:00 UTCEPSS rescore
  16. 2026-08-10 13:35 UTCGHSA enrichment
  17. 2026-08-10 01:26 UTCEG score recompute
  18. 2026-08-10 01:26 UTCGHSA enrichment
  19. 2026-08-09 13:46 UTCEPSS rescore
  20. 2026-08-09 13:28 UTCGHSA enrichment
  21. 2026-08-09 01:31 UTCEG score recompute
  22. 2026-08-09 01:31 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 09:05 UTCGHSA enrichment
  25. 2026-08-07 21:08 UTCEG score recompute
  26. 2026-08-07 21:08 UTCGHSA enrichment
  27. 2026-08-07 09:10 UTCGHSA enrichment
  28. 2026-08-06 21:12 UTCEG score recompute
  29. 2026-08-06 21:12 UTCGHSA enrichment
  30. 2026-08-06 13:46 UTCEPSS rescore
  31. 2026-08-06 09:14 UTCGHSA enrichment
  32. 2026-08-05 21:16 UTCEG score recompute
  33. 2026-08-05 21:16 UTCGHSA enrichment
  34. 2026-08-05 19:17 UTCEPSS rescore
  35. 2026-08-04 15:10 UTCEPSS rescore
  36. 2026-08-04 10:38 UTCEPSS rescore
  37. 2026-08-04 04:51 UTCGHSA enrichment
  38. 2026-08-03 16:53 UTCEG score recompute
  39. 2026-08-03 16:53 UTCGHSA enrichment
  40. 2026-08-03 10:35 UTCEPSS rescore
  41. 2026-08-02 17:34 UTCGHSA enrichment
  42. 2026-08-02 05:37 UTCEG score recompute
  43. 2026-08-02 05:37 UTCGHSA enrichment
  44. 2026-08-02 02:26 UTCEPSS rescore
  45. 2026-08-01 17:39 UTCEG score recompute
  46. 2026-08-01 17:39 UTCGHSA enrichment
  47. 2026-08-01 04:15 UTCEPSS rescore
  48. 2026-07-30 01:30 UTCEPSS rescore
  49. 2026-07-27 14:13 UTCEPSS rescore
  50. 2026-07-26 14:54 UTCEPSS rescore
  51. 2026-07-26 14:54 UTCEPSS rescore
  52. 2026-07-26 08:14 UTCEG score recompute
  53. 2026-07-26 08:14 UTCGHSA enrichment
  54. 2026-07-25 14:17 UTCEPSS rescore
  55. 2026-07-25 14:17 UTCEPSS rescore
  56. 2026-07-24 14:17 UTCEPSS rescore
  57. 2026-07-23 14:18 UTCEPSS rescore
  58. 2026-07-23 14:18 UTCEPSS rescore
  59. 2026-07-23 13:52 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  60. 2026-07-23 03:06 UTCEG score recompute
  61. 2026-07-22 14:08 UTCEPSS rescore
  62. 2026-07-21 15:24 UTCEPSS rescore
  63. 2026-07-21 15:24 UTCEPSS rescore
  64. 2026-07-20 17:08 UTCEPSS rescore
  65. 2026-07-19 14:31 UTCEPSS rescore
  66. 2026-07-19 14:31 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-19 02:28 UTCEPSS rescore
  69. 2026-07-18 10:04 UTCEPSS rescore
  70. 2026-07-18 10:04 UTCEPSS rescore
  71. 2026-07-16 17:03 UTCEPSS rescore
  72. 2026-07-16 17:03 UTCEPSS rescore
  73. 2026-07-15 16:57 UTCEPSS rescore
  74. 2026-07-15 16:57 UTCEPSS rescore
  75. 2026-07-15 02:00 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-20239?
CVE-2026-20239 is a high vulnerability published on May 20, 2026. In Splunk Enterprise versions below 10.2.2 and 10.0.5, and Splunk Cloud Platform versions below 10.3.2512.8, 10.2.2510.11, 10.1.2507.21, and 10.0.2503.13, a user with a role that has access to the _internal index could view session cookies and response bodies that contain sensitive data.
When was CVE-2026-20239 disclosed?
CVE-2026-20239 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20239 actively exploited?
CVE-2026-20239 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 60.3% of all scored CVEs.
What is the CVSS score of CVE-2026-20239?
CVE-2026-20239 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.
How do I remediate CVE-2026-20239?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20239, 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-2026-20239

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