CVE-2026-15282

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-10. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

The Instant Appointment plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'insapp_upload_image_as_attachment' function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
50.5%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 14, 2026

References (4)

Vendor Advisories for CVE-2026-15282(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 71× in last 7d / 71× 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. 2026-07-15 06:28 UTCEG score recompute
  2. 2026-07-15 06:28 UTCGHSA enrichment
  3. 2026-07-15 02:42 UTCEG score recompute
  4. 2026-07-15 02:42 UTCGHSA enrichment
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-14 22:55 UTCEG score recompute
  7. 2026-07-14 22:55 UTCGHSA enrichment
  8. 2026-07-14 19:08 UTCEG score recompute
  9. 2026-07-14 19:07 UTCGHSA enrichment
  10. 2026-07-14 15:15 UTCEG score recompute
  11. 2026-07-14 15:15 UTCGHSA enrichment
  12. 2026-07-14 11:29 UTCEG score recompute
  13. 2026-07-14 11:29 UTCGHSA enrichment
  14. 2026-07-14 07:43 UTCEG score recompute
  15. 2026-07-14 07:42 UTCGHSA enrichment
  16. 2026-07-14 03:51 UTCEG score recompute
  17. 2026-07-14 03:51 UTCGHSA enrichment
  18. 2026-07-14 00:05 UTCEG score recompute
  19. 2026-07-14 00:05 UTCGHSA enrichment
  20. 2026-07-13 22:30 UTCEPSS rescore
  21. 2026-07-13 20:18 UTCEG score recompute
  22. 2026-07-13 20:18 UTCGHSA enrichment
  23. 2026-07-13 16:31 UTCEG score recompute
  24. 2026-07-13 16:31 UTCGHSA enrichment
  25. 2026-07-13 12:44 UTCEG score recompute
Show 46 more
  1. 2026-07-13 12:44 UTCGHSA enrichment
  2. 2026-07-13 08:57 UTCEG score recompute
  3. 2026-07-13 08:57 UTCGHSA enrichment
  4. 2026-07-13 06:12 UTCEPSS rescore
  5. 2026-07-13 05:10 UTCEG score recompute
  6. 2026-07-13 05:10 UTCGHSA enrichment
  7. 2026-07-13 01:21 UTCEG score recompute
  8. 2026-07-13 01:21 UTCGHSA enrichment
  9. 2026-07-12 21:34 UTCEG score recompute
  10. 2026-07-12 21:34 UTCGHSA enrichment
  11. 2026-07-12 17:48 UTCEG score recompute
  12. 2026-07-12 17:47 UTCGHSA enrichment
  13. 2026-07-12 14:01 UTCEG score recompute
  14. 2026-07-12 14:01 UTCGHSA enrichment
  15. 2026-07-12 10:12 UTCEG score recompute
  16. 2026-07-12 10:12 UTCGHSA enrichment
  17. 2026-07-12 06:26 UTCEG score recompute
  18. 2026-07-12 06:26 UTCGHSA enrichment
  19. 2026-07-12 05:46 UTCEPSS rescore
  20. 2026-07-12 02:39 UTCEG score recompute
  21. 2026-07-12 02:39 UTCGHSA enrichment
  22. 2026-07-11 22:50 UTCEG score recompute
  23. 2026-07-11 22:50 UTCGHSA enrichment
  24. 2026-07-11 19:04 UTCEG score recompute
  25. 2026-07-11 19:04 UTCGHSA enrichment
  26. 2026-07-11 15:18 UTCEG score recompute
  27. 2026-07-11 15:18 UTCGHSA enrichment
  28. 2026-07-11 11:32 UTCEG score recompute
  29. 2026-07-11 11:32 UTCGHSA enrichment
  30. 2026-07-11 08:27 UTCEPSS rescore
  31. 2026-07-11 07:45 UTCEG score recompute
  32. 2026-07-11 07:45 UTCGHSA enrichment
  33. 2026-07-11 03:59 UTCEG score recompute
  34. 2026-07-11 03:59 UTCGHSA enrichment
  35. 2026-07-11 00:13 UTCEG score recompute
  36. 2026-07-11 00:12 UTCGHSA enrichment
  37. 2026-07-10 20:25 UTCEG score recompute
  38. 2026-07-10 20:25 UTCGHSA enrichment
  39. 2026-07-10 16:39 UTCEG score recompute
  40. 2026-07-10 16:39 UTCGHSA enrichment
  41. 2026-07-10 12:53 UTCEG score recompute
  42. 2026-07-10 12:53 UTCGHSA enrichment
  43. 2026-07-10 09:06 UTCEG score recompute
  44. 2026-07-10 09:06 UTCGHSA enrichment
  45. 2026-07-10 05:16 UTCEG score recompute
  46. 2026-07-10 05:13 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15282?
CVE-2026-15282 is a critical vulnerability published on July 10, 2026. The Instant Appointment plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'insappuploadimageasattachment' function in all versions up to, and including, 1.2. This makes it possible for unauthenticated attackers to upload arbitrary files on the…
When was CVE-2026-15282 disclosed?
CVE-2026-15282 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15282 actively exploited?
CVE-2026-15282 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15282?
CVE-2026-15282 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-15282?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15282, 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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