CVE-2026-87963

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: None knownExposed: 0

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

The Yo WordPress plugin from 1.1 through 1.3.1 does not sanitize or parameterize the username request parameter before using it in a SQL query, and reads it before WordPress applies its request escaping, allowing unauthenticated attackers to perform SQL injection and read arbitrary database contents including administrator password hashes.

CVSS v3
8.6
EG Score
8.6(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity86% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 20, 2026

Advisory Details (1)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Yo 1.1 – 1.3.1 – Unauthenticated SQL Injection via username Parameter | CVE 2026-87963 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/1cc5d470-7ffe-496a-9911-9b3b5c700194/

Vendor Advisories for CVE-2026-87963(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 31× in last 7d / 39× 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 00:10 UTCEG score recompute
  2. 2026-09-25 00:10 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 12:25 UTCGHSA enrichment
  5. 2026-09-24 00:41 UTCEG score recompute
  6. 2026-09-24 00:41 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 12:56 UTCGHSA enrichment
  9. 2026-09-23 01:12 UTCEG score recompute
  10. 2026-09-23 01:12 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 13:27 UTCGHSA enrichment
  13. 2026-09-22 01:42 UTCEG score recompute
  14. 2026-09-22 01:42 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 13:58 UTCGHSA enrichment
  17. 2026-09-21 02:14 UTCEG score recompute
  18. 2026-09-21 02:14 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 14:29 UTCEG score recompute
  21. 2026-09-20 14:29 UTCGHSA enrichment
  22. 2026-09-20 13:56 UTCEG score recompute
  23. 2026-09-20 13:56 UTCGHSA enrichment
  24. 2026-09-20 06:35 UTCGHSA enrichment
  25. 2026-09-19 18:44 UTCEG score recompute
Show 14 more
  1. 2026-09-19 18:44 UTCGHSA enrichment
  2. 2026-09-19 07:00 UTCEG score recompute
  3. 2026-09-19 06:59 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 19:14 UTCGHSA enrichment
  6. 2026-09-18 18:41 UTCGHSA enrichment
  7. 2026-09-18 06:56 UTCEG score recompute
  8. 2026-09-18 06:56 UTCGHSA enrichment
  9. 2026-09-17 19:32 UTCEPSS rescore
  10. 2026-09-17 19:12 UTCEG score recompute
  11. 2026-09-17 19:11 UTCGHSA enrichment
  12. 2026-09-17 07:27 UTCEG score recompute
  13. 2026-09-17 07:15 UTCEG score recompute
  14. 2026-09-17 07:14 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87963?
CVE-2026-87963 is a high vulnerability published on September 17, 2026. The Yo WordPress plugin from 1.1 through 1.3.1 does not sanitize or parameterize the username request parameter before using it in a SQL query, and reads it before WordPress applies its request escaping, allowing unauthenticated attackers to perform SQL injection and read arbitrary database…
When was CVE-2026-87963 disclosed?
CVE-2026-87963 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87963 actively exploited?
CVE-2026-87963 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 64.0% of all scored CVEs.
What is the CVSS score of CVE-2026-87963?
CVE-2026-87963 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-87963?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87963, 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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