CVE-2026-15726

MEDIUMPre-NVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

Score 6.4 from GitHub Security Advisory published 2026-08-16. 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: 0.3%CVSS: 6.4Exploit: None knownExposed services: Not assessed

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

The Serious Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'theme' Shortcode Attribute in all versions up to, and including, 1.4.0 due to insufficient input sanitization and output escaping. 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
6.4MEDIUMmedium confidence
EG Risk
33
EG Risk 33/100CISA SSVC

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%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 16, 2026

Last Modified

August 20, 2026

References (6)

Vendor Advisories for CVE-2026-15726(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 / 65× 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 121 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-15726?
CVE-2026-15726 is a medium vulnerability published on August 16, 2026. The Serious Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'theme' Shortcode Attribute in all versions up to, and including, 1.4.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level…
When was CVE-2026-15726 disclosed?
CVE-2026-15726 was first published on August 16, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15726 actively exploited?
CVE-2026-15726 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15726?
CVE-2026-15726 has a CVSS base score of 6.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15726?
No fix for CVE-2026-15726 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-15726 are linked in the Vendor Advisories panel on this page.

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