CVE-2023-4550Network attack vector

Unauthenticated arbitrary server file read

Published Jan 29, 2024 · Updated Nov 12, 2024

Improper input validation in OpenText AppBuilder from 21.2 before 23.2 allows remote attackers to read arbitrary server files. OpenText identifies only an unspecified AppBuilder page that processes file requests without adequate validation; no public source names the page or handler. Network reachability is sufficient, and the bounded consequence is read-only disclosure of files accessible to the server process.

CVSS severity7.5
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in OpenText AppBuilder from 21.2 before 23.2 allows remote attackers to read arbitrary server files. OpenText identifies only an unspecified AppBuilder page that processes file requests without adequate validation; no public source names the page or handler. Network reachability is sufficient, and the bounded consequence is read-only disclosure of files accessible to the server process.

The record

CVE
CVE-2023-4550
Published
Jan 29, 2024
Updated
Nov 12, 2024
Vendor
OpenText
Product
AppBuilder
Classifications
CWE-552, CWE-20, CAPEC-639, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2024Record 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=21.2 <23.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenText · AppBuilderversion=21.2 <23.2

Published CVSS scores

7.5OpenTextCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
CWE-20Improper Input Validation
CAPEC-639Probe System Files
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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