CVE-2023-31435Public exploitNetwork attack vector

Unauthorized data access via direct function requests

Published May 2, 2023 · Updated Jan 30, 2025

Authorization flaw in evasys before 8.2 Build 2286 and 9.x before 9.0 Build 2401 allows remote authenticated users to read or write unauthorized data. Server-side authorization is not enforced when privileged component URLs are requested directly or another user's object identifier is substituted. A valid trainer or subarea-administrator session is sufficient to view questionnaires and documents or rename another user's online template.

CVSS severity8.1
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization flaw in evasys before 8.2 Build 2286 and 9.x before 9.0 Build 2401 allows remote authenticated users to read or write unauthorized data. Server-side authorization is not enforced when privileged component URLs are requested directly or another user's object identifier is substituted. A valid trainer or subarea-administrator session is sufficient to view questionnaires and documents or rename another user's online template.

The record

CVE
CVE-2023-31435
Published
May 2, 2023
Updated
Jan 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

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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