CVE-2026-20257

MEDIUMPre-NVD 5.75.7—
EchelonGraph scoreHIGH confidence

Score 5.7 from GitHub Security Advisory published 2026-06-10. a secondary CVSS source baseline 5.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.7Exploit: NoneExposed: 0

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

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a classic dashboard that exfiltrates sensitive data from the browser of a higher-privileged user who views it.

The exfiltration is possible because classic dashboard panels do not fully validate style attribute values, which can allow for requests to reach external domains outside the configured Trusted Domains List.

The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.

CVSS v3
5.7
EG Score
5.7(high)
EPSS
9.8%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 15, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
No patch confirmed yet.
generic

SVD-2026-0607 | Splunk Vulnerability Disclosure

https://advisory.splunk.com/advisories/SVD-2026-0607

Vendor Advisories for CVE-2026-20257(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 22× in last 7d / 86× 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. 2026-07-07 06:02 UTCEG score recompute
  2. 2026-07-07 06:02 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 11:10 UTCEG score recompute
  6. 2026-07-05 11:10 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 11:40 UTCEG score recompute
  10. 2026-07-04 11:40 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 08:00 UTCEG score recompute
  13. 2026-07-03 08:00 UTCGHSA enrichment
  14. 2026-07-02 07:17 UTCEG score recompute
  15. 2026-07-02 07:17 UTCGHSA enrichment
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-07-01 07:58 UTCEG score recompute
  19. 2026-07-01 07:58 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 08:52 UTCEG score recompute
  22. 2026-06-30 08:52 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 09:46 UTCEG score recompute
  25. 2026-06-29 09:46 UTCGHSA enrichment
Show 61 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 10:27 UTCEG score recompute
  3. 2026-06-28 10:27 UTCGHSA enrichment
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 11:20 UTCEG score recompute
  7. 2026-06-27 11:20 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 12:14 UTCEG score recompute
  10. 2026-06-26 12:14 UTCGHSA enrichment
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-25 07:06 UTCEG score recompute
  13. 2026-06-25 07:06 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-24 07:58 UTCEG score recompute
  16. 2026-06-24 07:58 UTCGHSA enrichment
  17. 2026-06-23 21:32 UTCEPSS rescore
  18. 2026-06-23 08:38 UTCEG score recompute
  19. 2026-06-23 08:38 UTCGHSA enrichment
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-22 09:29 UTCEG score recompute
  23. 2026-06-22 09:29 UTCGHSA enrichment
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 14:56 UTCEPSS rescore
  26. 2026-06-21 10:05 UTCEG score recompute
  27. 2026-06-21 10:05 UTCGHSA enrichment
  28. 2026-06-21 01:59 UTCEPSS rescore
  29. 2026-06-21 01:59 UTCEPSS rescore
  30. 2026-06-20 10:31 UTCEG score recompute
  31. 2026-06-20 10:31 UTCGHSA enrichment
  32. 2026-06-19 19:25 UTCEPSS rescore
  33. 2026-06-19 11:21 UTCEG score recompute
  34. 2026-06-19 11:21 UTCGHSA enrichment
  35. 2026-06-18 17:52 UTCEPSS rescore
  36. 2026-06-18 12:12 UTCEG score recompute
  37. 2026-06-18 12:12 UTCGHSA enrichment
  38. 2026-06-17 17:53 UTCEPSS rescore
  39. 2026-06-17 13:05 UTCEG score recompute
  40. 2026-06-17 13:05 UTCGHSA enrichment
  41. 2026-06-16 17:52 UTCEPSS rescore
  42. 2026-06-16 14:01 UTCEG score recompute
  43. 2026-06-16 14:01 UTCGHSA enrichment
  44. 2026-06-15 17:48 UTCEPSS rescore
  45. 2026-06-15 14:46 UTCEG score recompute
  46. 2026-06-15 14:46 UTCGHSA enrichment
  47. 2026-06-14 23:18 UTCEPSS rescore
  48. 2026-06-14 15:40 UTCEG score recompute
  49. 2026-06-14 15:40 UTCGHSA enrichment
  50. 2026-06-13 23:00 UTCEPSS rescore
  51. 2026-06-13 23:00 UTCEPSS rescore
  52. 2026-06-13 16:35 UTCEG score recompute
  53. 2026-06-13 16:35 UTCGHSA enrichment
  54. 2026-06-12 23:12 UTCEPSS rescore
  55. 2026-06-12 17:29 UTCEG score recompute
  56. 2026-06-12 17:29 UTCGHSA enrichment
  57. 2026-06-11 18:22 UTCEG score recompute
  58. 2026-06-11 18:22 UTCGHSA enrichment
  59. 2026-06-11 14:00 UTCEPSS rescore
  60. 2026-06-10 19:17 UTCEG score recompute
  61. 2026-06-10 19:17 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20257?
CVE-2026-20257 is a medium vulnerability published on June 10, 2026. In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a classic dashboard that exfiltrates…
When was CVE-2026-20257 disclosed?
CVE-2026-20257 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20257 actively exploited?
CVE-2026-20257 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-20257?
CVE-2026-20257 has a CVSS v3 base score of 5.7 (NVD).
How do I remediate CVE-2026-20257?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20257, 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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