CVE-2026-10100

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory published 2026-06-02. a secondary CVSS source baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.4Exploit: NoneExposed: 0

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

The Simple Custom Login Page plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the color settings fields (Page Background, Form Background, Text Color, Link Color) in versions up to and including 1.0.3. This is due to insufficient input sanitization of the color option values (they were registered with register_setting() and stored via the Settings API/update_option() with no sanitize_callback) combined with the values being output into a block on wp-login.php using esc_attr(), which is incorrect for a CSS context (it does not escape ;, {, }, / or *). This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary CSS rules into the login page that are rendered for all unauthenticated visitors, enabling UI-redress and credential-phishing attacks.

CVSS v3
4.4
EG Score
4.4(medium)
EPSS
8.1%
KEV
Not listed

Published

June 2, 2026

Last Modified

June 2, 2026

References (3)

Vendor Advisories for CVE-2026-10100(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 11× in last 7d / 72× 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 126 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-10100?
CVE-2026-10100 is a medium vulnerability published on June 2, 2026. The Simple Custom Login Page plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the color settings fields (Page Background, Form Background, Text Color, Link Color) in versions up to and including 1.0.3. This is due to insufficient input sanitization of the color option values…
When was CVE-2026-10100 disclosed?
CVE-2026-10100 was first published in the National Vulnerability Database on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-10100 actively exploited?
CVE-2026-10100 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-10100?
CVE-2026-10100 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-10100?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10100, 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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