CVE-2026-87894

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-12. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

The Rox Appointment Booking WordPress plugin before 1.2.3 does not perform any authorization check on the endpoint that returns a booking's confirmation details, and each booking is addressed by a sequential numeric identifier, allowing unauthenticated attackers to read any customer's name, email, phone, booking details and payment status by enumerating that identifier.

CVSS v3
5.3
EG Score
5.3(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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

September 12, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 12, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Rox Appointment Booking 1.0.9 – 1.2.2 – Unauthenticated Customer PII Disclosure via IDOR | CVE 2026-87894 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/3f098db1-5406-4a77-adb1-99a66eb806a4/

Vendor Advisories for CVE-2026-87894(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 20× in last 7d / 31× 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. 2026-09-21 03:24 UTCEG score recompute
  2. 2026-09-21 03:24 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 02:23 UTCEG score recompute
  5. 2026-09-20 02:23 UTCGHSA enrichment
  6. 2026-09-19 01:22 UTCEG score recompute
  7. 2026-09-19 01:22 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 00:22 UTCEG score recompute
  10. 2026-09-18 00:22 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-16 23:22 UTCEG score recompute
  13. 2026-09-16 23:22 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 22:21 UTCEG score recompute
  17. 2026-09-15 22:20 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 21:18 UTCGHSA enrichment
  20. 2026-09-14 18:24 UTCGHSA enrichment
  21. 2026-09-13 17:24 UTCEG score recompute
  22. 2026-09-13 17:24 UTCGHSA enrichment
  23. 2026-09-13 16:48 UTCEPSS rescore
  24. 2026-09-12 16:23 UTCGHSA enrichment
  25. 2026-09-12 15:34 UTCEG score recompute▲ 5.30
Show 6 more
  1. 2026-09-12 15:34 UTCGHSA enrichment
  2. 2026-09-12 15:33 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  3. 2026-09-12 15:02 UTCEPSS rescore
  4. 2026-09-12 06:20 UTCNVD update
  5. 2026-09-12 06:14 UTCEG score recompute
  6. 2026-09-12 06:13 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87894?
CVE-2026-87894 is a medium vulnerability published on September 12, 2026. The Rox Appointment Booking WordPress plugin before 1.2.3 does not perform any authorization check on the endpoint that returns a booking's confirmation details, and each booking is addressed by a sequential numeric identifier, allowing unauthenticated attackers to read any customer's name, email,…
When was CVE-2026-87894 disclosed?
CVE-2026-87894 was first published in the National Vulnerability Database on September 12, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87894 actively exploited?
CVE-2026-87894 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 90.7% of all scored CVEs.
What is the CVSS score of CVE-2026-87894?
CVE-2026-87894 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-87894?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87894, 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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