CVE-2026-88993

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH confidence

Score 6.8 from GitHub Security Advisory published 2026-09-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: None knownExposed: 0

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

The All Bootstrap Blocks WordPress plugin through 1.3.31 does not properly escape a block attribute before outputting it in HTML tag-name position, allowing users with Contributor-level access and above to inject arbitrary web scripts that execute when the affected content is viewed.

CVSS v3
6.8
EG Score
6.8(high)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 18, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

All Bootstrap Blocks <= 1.3.31 – Contributor+ Stored XSS via areoi/button type Attribute | CVE 2026-88993 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/fc1f2f62-62cd-4a70-b541-2278eb0edefe/

Vendor Advisories for CVE-2026-88993(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 / 25× 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. 2026-09-24 16:02 UTCEG score recompute
  2. 2026-09-24 16:02 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 16:34 UTCGHSA enrichment
  6. 2026-09-22 17:06 UTCEG score recompute
  7. 2026-09-22 17:06 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 17:38 UTCEG score recompute
  11. 2026-09-21 17:38 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 18:10 UTCGHSA enrichment
  14. 2026-09-19 18:42 UTCEG score recompute
  15. 2026-09-19 18:42 UTCGHSA enrichment
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 19:14 UTCEG score recompute
  18. 2026-09-18 19:14 UTCGHSA enrichment
  19. 2026-09-18 12:21 UTCGHSA enrichment
  20. 2026-09-18 11:19 UTCEG score recompute▲ 6.80
  21. 2026-09-18 11:19 UTCGHSA enrichment
  22. 2026-09-18 11:19 UTCMITRE cvelistV5CVSS v3 → 6.8 · severity → MEDIUM
  23. 2026-09-18 06:21 UTCNVD update
  24. 2026-09-18 06:04 UTCEG score recompute
  25. 2026-09-18 06:04 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88993?
CVE-2026-88993 is a medium vulnerability published on September 18, 2026. The All Bootstrap Blocks WordPress plugin through 1.3.31 does not properly escape a block attribute before outputting it in HTML tag-name position, allowing users with Contributor-level access and above to inject arbitrary web scripts that execute when the affected content is viewed.
When was CVE-2026-88993 disclosed?
CVE-2026-88993 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-2026-88993 actively exploited?
CVE-2026-88993 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 65.4% of all scored CVEs.
What is the CVSS score of CVE-2026-88993?
CVE-2026-88993 has a CVSS v3.1 base score of 6.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-88993?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88993, 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-2026-88993

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