CVE-2026-8853

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreHIGH confidence

Score 4.4 from GitHub Security Advisory published 2026-06-10. 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 MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because the memo value is stored via update_post_meta() rather than wp_insert_post(), WordPress's built-in kses and unfiltered_html protections do not apply, allowing attackers to break out of the textarea element via injected closing tags regardless of role-based content filtering.

CVSS v3
4.4
EG Score
4.4(high)
EPSS
10.1%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 10, 2026

References (6)

Vendor Advisories for CVE-2026-8853(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 / 84× 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 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 14:29 UTCEG score recompute
  6. 2026-07-05 14:29 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 14:57 UTCEG score recompute
  10. 2026-07-04 14:56 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 15:24 UTCEG score recompute
  14. 2026-07-03 15:23 UTCGHSA enrichment
  15. 2026-07-02 12:57 UTCEG score recompute
  16. 2026-07-02 12:57 UTCGHSA enrichment
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-07-01 13:25 UTCEG score recompute
  19. 2026-07-01 13:25 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 13:43 UTCEG score recompute
  22. 2026-06-30 13:43 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-29 11:04 UTCEG score recompute
  25. 2026-06-29 11:04 UTCGHSA enrichment
Show 59 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 11:31 UTCEG score recompute
  3. 2026-06-28 11:31 UTCGHSA enrichment
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-27 11:58 UTCEG score recompute
  6. 2026-06-27 11:58 UTCGHSA enrichment
  7. 2026-06-27 03:08 UTCEPSS rescore
  8. 2026-06-26 12:22 UTCEG score recompute
  9. 2026-06-26 12:22 UTCGHSA enrichment
  10. 2026-06-25 13:50 UTCEPSS rescore
  11. 2026-06-25 07:38 UTCEG score recompute
  12. 2026-06-25 07:38 UTCGHSA enrichment
  13. 2026-06-24 14:05 UTCEPSS rescore
  14. 2026-06-24 08:04 UTCEG score recompute
  15. 2026-06-24 08:04 UTCGHSA enrichment
  16. 2026-06-23 21:33 UTCEPSS rescore
  17. 2026-06-23 08:32 UTCEG score recompute
  18. 2026-06-23 08:32 UTCGHSA enrichment
  19. 2026-06-22 14:25 UTCEPSS rescore
  20. 2026-06-22 07:30 UTCEG score recompute
  21. 2026-06-22 07:30 UTCGHSA enrichment
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 07:27 UTCEG score recompute
  24. 2026-06-21 07:27 UTCGHSA enrichment
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-20 07:55 UTCEG score recompute
  27. 2026-06-20 07:55 UTCGHSA enrichment
  28. 2026-06-19 19:26 UTCEPSS rescore
  29. 2026-06-19 08:22 UTCEG score recompute
  30. 2026-06-19 08:22 UTCGHSA enrichment
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-18 07:10 UTCEG score recompute
  33. 2026-06-18 07:09 UTCGHSA enrichment
  34. 2026-06-17 17:53 UTCEPSS rescore
  35. 2026-06-17 06:02 UTCEG score recompute
  36. 2026-06-17 06:01 UTCGHSA enrichment
  37. 2026-06-16 17:53 UTCEPSS rescore
  38. 2026-06-16 06:30 UTCEG score recompute
  39. 2026-06-16 06:30 UTCGHSA enrichment
  40. 2026-06-15 17:49 UTCEPSS rescore
  41. 2026-06-15 17:49 UTCEPSS rescore
  42. 2026-06-15 06:58 UTCEG score recompute
  43. 2026-06-15 06:57 UTCGHSA enrichment
  44. 2026-06-14 23:18 UTCEPSS rescore
  45. 2026-06-14 07:25 UTCEG score recompute
  46. 2026-06-14 07:25 UTCGHSA enrichment
  47. 2026-06-13 23:00 UTCEPSS rescore
  48. 2026-06-13 07:54 UTCEG score recompute
  49. 2026-06-13 07:54 UTCGHSA enrichment
  50. 2026-06-12 23:12 UTCEPSS rescore
  51. 2026-06-12 23:12 UTCEPSS rescore
  52. 2026-06-12 08:21 UTCEG score recompute
  53. 2026-06-12 08:21 UTCGHSA enrichment
  54. 2026-06-11 14:00 UTCEPSS rescore
  55. 2026-06-11 08:49 UTCEG score recompute
  56. 2026-06-11 08:49 UTCGHSA enrichment
  57. 2026-06-10 22:19 UTCEPSS rescore
  58. 2026-06-10 09:18 UTCEG score recompute
  59. 2026-06-10 09:17 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8853?
CVE-2026-8853 is a medium vulnerability published on June 10, 2026. The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'memo' parameter in all versions up to, and including, 5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level access and above,…
When was CVE-2026-8853 disclosed?
CVE-2026-8853 was first published in the National Vulnerability Database on June 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8853 actively exploited?
CVE-2026-8853 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8853?
CVE-2026-8853 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-8853?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8853, 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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