CVE-2026-6427

MEDIUMNVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-05-28. NVD baseline CVSS 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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 a3 Lazy Load plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.7.6 This is due to a regex bug in the _filter_videos() method that breaks HTML attribute quoting when processing crafted elements, combined with unescaped output in the admin/views/form-data.php template. An authenticated attacker with Contributor-level access can insert a crafted tag whose src attribute contains an embedded class=" substring that tricks the plugin's class-replacement regex into consuming an attribute-value closing quote. This shifts the HTML5 parser's quote boundary, promoting attacker-controlled text from inside a quoted attribute value into standalone event-handler attributes (autofocus, onfocus). The injected script executes in the browser of any user (including administrators) who views the post.

CVSS v3
6.4
EG Score
6.4(medium)
EPSS
21.0%
KEV
Not listed

Published

May 28, 2026

Last Modified

May 28, 2026

References (8)

Vendor Advisories for CVE-2026-6427(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 13× in last 7d / 69× 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 129 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6427?
CVE-2026-6427 is a medium vulnerability published on May 28, 2026. The a3 Lazy Load plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.7.6 This is due to a regex bug in the filtervideos() method that breaks HTML attribute quoting when processing crafted <video> elements, combined with unescaped output in the…
When was CVE-2026-6427 disclosed?
CVE-2026-6427 was first published in the National Vulnerability Database on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6427 actively exploited?
CVE-2026-6427 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6427?
CVE-2026-6427 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-6427?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6427, 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-2026-6427

Explore →

Is Your Infrastructure Affected by CVE-2026-6427?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs