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CVE-2026-55518: avo >= 4.0.0.beta.1, < 4.0.0.beta.51, < 3.32.1
CVE-2026-55518. CVSS 3.1 base score 9.6 (CRITICAL, Vendor/CNA). EPSS 0.00448 (percentile 0.37981), scored 24-Oct-2026.
Affected technology
avo · >= 4.0.0.beta.1, < 4.0.0.beta.51, < 3.32.1
avo-hq
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
An authenticated low-privileged Avo user can bypass hidden or disabled attach controls and directly attach related records to a parent record by sending a crafted POST request, which can lead to privilege escalation and cross-tenant data exposure where associations represent authorization-bearing relationships. Vendor/CNA’s CVSS 3.1 assessment (base score 9.6/10) rates confidentiality and integrity impact as high; availability impact as none.
- CWE
- CWE-639, CWE-862, CWE-863
- CCR priority
- 38.5 /100 (P4)
- CVSS 3.1
- 9.6 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N · Vendor/CNA
- EPSS
- 0.00448 · percentile 0.37981 · 2026-10-24
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-25 01:28:19.133527+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-55518.html