CVE-2026-5031Public exploitNetwork attack vector

User record disclosure via unchecked ID parameter

Published Mar 29, 2026 · Updated Mar 29, 2026

IDOR in BichitroGan ISP Billing Software 2025.3.20 allows remote authenticated users to read other users' account records. The settings/users-view endpoint accepts a user-controlled numeric ID and returns the matching profile without checking authorization. A Sales or Agent account is sufficient to enumerate records, including administrator profiles, while the demonstrated effect is limited to disclosure.

CVSS severity4.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in BichitroGan ISP Billing Software 2025.3.20 allows remote authenticated users to read other users' account records. The settings/users-view endpoint accepts a user-controlled numeric ID and returns the matching profile without checking authorization. A Sales or Agent account is sufficient to enumerate records, including administrator profiles, while the demonstrated effect is limited to disclosure.

The record

CVE
CVE-2026-5031
Published
Mar 29, 2026
Updated
Mar 29, 2026
Vendor
BichitroGan
Product
ISP Billing Software
Classifications
CWE-99
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=2025.3.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BichitroGan · ISP Billing Softwareversion=2025.3.20

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-99Improper Control of Resource Identifiers ('Resource Injection')

Public exploit references

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

Technologies

Your stack

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Your stack

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