CVE-2026-6858

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-22. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

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

The Transbank Webpay WordPress plugin before 1.14.0 does not sanitize and escape logs to be displayed, allowing unauthenticated users to perform Stored XSS attacks against logged in administrator

CVSS v3
7.1
EG Score
7.1(high)
EPSS
5.9%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Transbank Webpay < 1.14.0 – Unauthenticated Stored XSS | CVE 2026-6858 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/81035d75-81a5-486a-a9fb-b0d1e0befe3c/

Vendor Advisories for CVE-2026-6858(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 36× in last 7d / 66× 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. 2026-07-06 23:24 UTCEG score recompute
  2. 2026-07-06 23:24 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 11:38 UTCEG score recompute
  6. 2026-07-06 11:38 UTCGHSA enrichment
  7. 2026-07-05 23:50 UTCEG score recompute
  8. 2026-07-05 23:50 UTCGHSA enrichment
  9. 2026-07-05 12:05 UTCEG score recompute
  10. 2026-07-05 12:04 UTCGHSA enrichment
  11. 2026-07-05 02:31 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-05 00:18 UTCEG score recompute
  14. 2026-07-05 00:18 UTCGHSA enrichment
  15. 2026-07-04 12:33 UTCEG score recompute
  16. 2026-07-04 12:33 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 00:47 UTCEG score recompute
  20. 2026-07-04 00:47 UTCGHSA enrichment
  21. 2026-07-03 12:56 UTCEG score recompute
  22. 2026-07-03 12:56 UTCGHSA enrichment
  23. 2026-07-03 00:02 UTCEG score recompute
  24. 2026-07-03 00:01 UTCGHSA enrichment
  25. 2026-07-02 12:16 UTCEG score recompute
Show 41 more
  1. 2026-07-02 12:15 UTCGHSA enrichment
  2. 2026-07-02 00:30 UTCEG score recompute
  3. 2026-07-02 00:30 UTCGHSA enrichment
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 12:38 UTCEG score recompute
  6. 2026-07-01 12:38 UTCGHSA enrichment
  7. 2026-07-01 00:53 UTCEG score recompute
  8. 2026-07-01 00:53 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 13:07 UTCEG score recompute
  11. 2026-06-30 13:07 UTCGHSA enrichment
  12. 2026-06-30 01:21 UTCEG score recompute
  13. 2026-06-30 01:21 UTCGHSA enrichment
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 13:36 UTCEG score recompute
  16. 2026-06-29 13:36 UTCGHSA enrichment
  17. 2026-06-29 01:51 UTCEG score recompute
  18. 2026-06-29 01:51 UTCGHSA enrichment
  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 14:06 UTCEG score recompute
  21. 2026-06-28 14:06 UTCGHSA enrichment
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 02:21 UTCEG score recompute
  24. 2026-06-28 02:21 UTCGHSA enrichment
  25. 2026-06-27 14:36 UTCEG score recompute
  26. 2026-06-27 14:36 UTCGHSA enrichment
  27. 2026-06-27 03:08 UTCEPSS rescore
  28. 2026-06-27 02:51 UTCEG score recompute
  29. 2026-06-27 02:50 UTCGHSA enrichment
  30. 2026-06-26 15:02 UTCEG score recompute
  31. 2026-06-26 15:02 UTCGHSA enrichment
  32. 2026-06-26 03:16 UTCEG score recompute
  33. 2026-06-26 03:16 UTCGHSA enrichment
  34. 2026-06-25 15:31 UTCEG score recompute▲ 7.10
  35. 2026-06-25 15:31 UTCGHSA enrichment
  36. 2026-06-25 13:50 UTCEPSS rescore
  37. 2026-06-24 14:05 UTCEPSS rescore
  38. 2026-06-23 21:33 UTCEPSS rescore
  39. 2026-06-22 19:39 UTCNVD updateCVSS v3 → 7.1 · severity → HIGH
  40. 2026-06-22 10:03 UTCEG score recompute
  41. 2026-06-22 10:03 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6858?
CVE-2026-6858 is a high vulnerability published on June 22, 2026. The Transbank Webpay WordPress plugin before 1.14.0 does not sanitize and escape logs to be displayed, allowing unauthenticated users to perform Stored XSS attacks against logged in administrator
When was CVE-2026-6858 disclosed?
CVE-2026-6858 was first published in the National Vulnerability Database on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6858 actively exploited?
CVE-2026-6858 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6858?
CVE-2026-6858 has a CVSS v3.1 base score of 7.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-6858?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6858, 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-2026-6858

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