CVE-2026-6454

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-07-24. a secondary CVSS source baseline 6.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: None knownExposed: 0

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

The Firelight Lightbox plugin for WordPress is vulnerable to Stored DOM Cross-Site Scripting in versions up to and including 2.3.20. This is due to insufficient sanitization of the href attribute value within the FancyBox V2 PDF beforeLoad JavaScript callback generated in inc/fancybox-2.php, where this.href is string-concatenated directly into an HTML string without escaping, allowing a stored href containing entity-encoded double-quotes to break out of the data attribute and inject arbitrary event handlers into the DOM. This makes it possible for authenticated attackers with contributor-level access and above to inject arbitrary web scripts into pages that execute whenever a user clicks the malicious PDF link.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

July 24, 2026

Last Modified

July 24, 2026

References (8)

Vendor Advisories for CVE-2026-6454(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 14× in last 7d / 80× 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 104 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6454?
CVE-2026-6454 is a medium vulnerability published on July 24, 2026. The Firelight Lightbox plugin for WordPress is vulnerable to Stored DOM Cross-Site Scripting in versions up to and including 2.3.20. This is due to insufficient sanitization of the href attribute value within the FancyBox V2 PDF beforeLoad JavaScript callback generated in inc/fancybox-2.php, where…
When was CVE-2026-6454 disclosed?
CVE-2026-6454 was first published in the National Vulnerability Database on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6454 actively exploited?
CVE-2026-6454 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 90.2% of all scored CVEs.
What is the CVSS score of CVE-2026-6454?
CVE-2026-6454 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2026-6454?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6454, 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-2026-6454

Explore →

Is Your Infrastructure Affected by CVE-2026-6454?

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

Start Free Scan →Browse All CVEs