CVE-2026-87915

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

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

The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via values[Name] Parameter in all versions up to, and including, 1.24.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wp_kses sanitization applied on output is insufficient in this context because HTML entities within allowed attribute values survive normalization intact and are later evaluated by the jQuery(link.attr('href')) sink in wp-admin/js/common.js when a contextual help tab anchor is clicked.

CVSS v3
7.2
EG Score
7.2(high)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity72% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

References (9)

Vendor Advisories for CVE-2026-87915(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 32× in last 7d / 35× 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. 2026-09-25 06:22 UTCGHSA enrichment
  2. 2026-09-24 18:10 UTCEG score recompute
  3. 2026-09-24 18:10 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 05:58 UTCEG score recompute
  6. 2026-09-24 05:58 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 17:46 UTCGHSA enrichment
  9. 2026-09-23 05:35 UTCGHSA enrichment
  10. 2026-09-22 17:23 UTCEG score recompute
  11. 2026-09-22 17:22 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 05:07 UTCEG score recompute
  14. 2026-09-22 05:07 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 16:56 UTCGHSA enrichment
  17. 2026-09-21 04:30 UTCEG score recompute
  18. 2026-09-21 04:29 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 16:14 UTCGHSA enrichment
  21. 2026-09-20 04:02 UTCGHSA enrichment
  22. 2026-09-19 15:51 UTCEG score recompute
  23. 2026-09-19 15:50 UTCGHSA enrichment
  24. 2026-09-19 03:36 UTCEG score recompute
  25. 2026-09-19 03:36 UTCGHSA enrichment
Show 10 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 15:25 UTCEG score recompute
  3. 2026-09-18 15:25 UTCGHSA enrichment
  4. 2026-09-18 14:44 UTCEG score recompute
  5. 2026-09-18 14:44 UTCGHSA enrichment
  6. 2026-09-18 13:40 UTCEG score recompute
  7. 2026-09-18 13:40 UTCGHSA enrichment
  8. 2026-09-18 10:19 UTCEG score recompute
  9. 2026-09-18 09:34 UTCEG score recompute
  10. 2026-09-18 09:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87915?
CVE-2026-87915 is a high vulnerability published on September 18, 2026. The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via values[Name] Parameter in all versions up to, and including, 1.24.0 due to insufficient input sanitization and output escaping.…
When was CVE-2026-87915 disclosed?
CVE-2026-87915 was first published in the National Vulnerability Database on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87915 actively exploited?
CVE-2026-87915 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 60.2% of all scored CVEs.
What is the CVSS score of CVE-2026-87915?
CVE-2026-87915 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-87915?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87915, 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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