CVE-2026-6072Network attack vector

Unauthenticated API access via loose token comparison

Published May 20, 2026 · Updated May 20, 2026

Authorization bypass in Oliver POS 2.4.2.6 and earlier allows remote attackers to access POS REST API endpoints without authentication. The oliver_pos_rest_authentication() callback loosely compares the OliverAuth header with an unset option whose false value equals the string 0 under PHP type juggling. Fresh installations with an incomplete connection flow expose user reads, profile changes, non-admin deletion, and administrator email reset that enables site takeover.

CVSS severity6.5
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authorization bypass in Oliver POS 2.4.2.6 and earlier allows remote attackers to access POS REST API endpoints without authentication. The oliver_pos_rest_authentication() callback loosely compares the OliverAuth header with an unset option whose false value equals the string 0 under PHP type juggling. Fresh installations with an incomplete connection flow expose user reads, profile changes, non-admin deletion, and administrator email reset that enables site takeover.

The record

CVE
CVE-2026-6072
Published
May 20, 2026
Updated
May 20, 2026
Vendor
Oliver POS
Product
Oliver POS
Classifications
CWE-639, T1190, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.4.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oliver POS · Oliver POSversion=0 <=2.4.2.6

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo