CVE-2026-8883

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreHIGH confidence

Score 6.4 from GitHub Security Advisory published 2026-06-09. the CNA's CVSS baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:wordfence, epss, ghsa
Trending — 3 sources updated this week
6.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0

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

The Global Body Mass Index Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gbmicalc' shortcode in versions up to, and including, 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes in the GBMI_Calc_Widget::widget() function. Shortcode attributes are extracted directly into local variables via @extract($args) and then echoed unescaped into an HTML style attribute (height/width) and HTML body context (title), allowing attribute-breakout payloads. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS v3
6.4
EG Score
6.4(high)
EPSS
8.5%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 9, 2026

References (5)

Vendor Advisories for CVE-2026-8883(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 21× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-05 15:56 UTCEG score recompute
  5. 2026-07-05 15:56 UTCGHSA enrichment
  6. 2026-07-05 02:31 UTCEPSS rescore
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 15:53 UTCEG score recompute
  9. 2026-07-04 15:53 UTCGHSA enrichment
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-03 16:03 UTCEG score recompute
  13. 2026-07-03 16:03 UTCGHSA enrichment
  14. 2026-07-02 15:35 UTCEG score recompute
  15. 2026-07-02 15:35 UTCGHSA enrichment
  16. 2026-07-01 15:53 UTCEG score recompute
  17. 2026-07-01 15:53 UTCGHSA enrichment
  18. 2026-07-01 15:07 UTCEPSS rescore
  19. 2026-06-30 23:22 UTCEPSS rescore
  20. 2026-06-30 16:19 UTCEG score recompute
  21. 2026-06-30 16:19 UTCGHSA enrichment
  22. 2026-06-29 14:06 UTCEPSS rescore
  23. 2026-06-29 13:13 UTCEG score recompute
  24. 2026-06-29 13:13 UTCGHSA enrichment
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 61 more
  1. 2026-06-28 13:39 UTCEG score recompute
  2. 2026-06-28 13:39 UTCGHSA enrichment
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 14:05 UTCEG score recompute
  5. 2026-06-27 14:05 UTCGHSA enrichment
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-26 14:21 UTCEG score recompute
  8. 2026-06-26 14:21 UTCGHSA enrichment
  9. 2026-06-25 14:47 UTCEG score recompute
  10. 2026-06-25 14:47 UTCGHSA enrichment
  11. 2026-06-25 13:50 UTCEPSS rescore
  12. 2026-06-24 15:09 UTCEG score recompute
  13. 2026-06-24 15:09 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-23 21:33 UTCEPSS rescore
  16. 2026-06-23 15:35 UTCEG score recompute
  17. 2026-06-23 15:35 UTCGHSA enrichment
  18. 2026-06-22 14:25 UTCEPSS rescore
  19. 2026-06-22 05:28 UTCEG score recompute
  20. 2026-06-22 05:27 UTCGHSA enrichment
  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 01:59 UTCEPSS rescore
  23. 2026-06-21 01:56 UTCEG score recompute
  24. 2026-06-21 01:56 UTCGHSA enrichment
  25. 2026-06-20 00:46 UTCEG score recompute
  26. 2026-06-20 00:45 UTCGHSA enrichment
  27. 2026-06-19 19:26 UTCEPSS rescore
  28. 2026-06-19 00:37 UTCEG score recompute
  29. 2026-06-19 00:37 UTCGHSA enrichment
  30. 2026-06-18 17:52 UTCEPSS rescore
  31. 2026-06-18 01:01 UTCEG score recompute
  32. 2026-06-18 01:01 UTCGHSA enrichment
  33. 2026-06-17 17:53 UTCEPSS rescore
  34. 2026-06-17 01:18 UTCEG score recompute
  35. 2026-06-17 01:18 UTCGHSA enrichment
  36. 2026-06-16 17:53 UTCEPSS rescore
  37. 2026-06-16 01:45 UTCEG score recompute
  38. 2026-06-16 01:45 UTCGHSA enrichment
  39. 2026-06-15 17:49 UTCEPSS rescore
  40. 2026-06-15 17:49 UTCEPSS rescore
  41. 2026-06-15 02:11 UTCEG score recompute
  42. 2026-06-15 02:11 UTCGHSA enrichment
  43. 2026-06-14 23:18 UTCEPSS rescore
  44. 2026-06-14 02:37 UTCEG score recompute
  45. 2026-06-14 02:36 UTCGHSA enrichment
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-13 03:03 UTCEG score recompute
  48. 2026-06-13 03:03 UTCGHSA enrichment
  49. 2026-06-12 23:12 UTCEPSS rescore
  50. 2026-06-12 23:12 UTCEPSS rescore
  51. 2026-06-12 03:29 UTCEG score recompute
  52. 2026-06-12 03:29 UTCGHSA enrichment
  53. 2026-06-11 14:00 UTCEPSS rescore
  54. 2026-06-11 03:55 UTCEG score recompute
  55. 2026-06-11 03:55 UTCGHSA enrichment
  56. 2026-06-10 22:19 UTCEPSS rescore
  57. 2026-06-10 13:22 UTCEPSS rescore
  58. 2026-06-10 04:21 UTCEG score recompute
  59. 2026-06-10 04:21 UTCGHSA enrichment
  60. 2026-06-09 04:48 UTCEG score recompute
  61. 2026-06-09 04:45 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8883?
CVE-2026-8883 is a medium vulnerability published on June 9, 2026. The Global Body Mass Index Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'gbmicalc' shortcode in versions up to, and including, 1.2. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes in the…
When was CVE-2026-8883 disclosed?
CVE-2026-8883 was first published in the National Vulnerability Database on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8883 actively exploited?
CVE-2026-8883 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8883?
CVE-2026-8883 has a CVSS v4.0 base score of 6.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-8883?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8883, 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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