CVE-2023-26435Network attack vector

Authenticated file disclosure via ODT draw references

Published Jun 20, 2023 · Updated Aug 2, 2024

SSRF in OX App Suite Office 7.10.6-rev7 and earlier allows remote authenticated users to read local image files via crafted ODT files. Draw XML fragments embed filesystem or network references that the local LibreOffice instance resolves because content filters fail to reject those resources. An authenticated account and document processing are required; exposure is limited to supported file types readable by the Open-Xchange service account and internal network-service discovery.

CVSS severity5.0
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in OX App Suite Office 7.10.6-rev7 and earlier allows remote authenticated users to read local image files via crafted ODT files. Draw XML fragments embed filesystem or network references that the local LibreOffice instance resolves because content filters fail to reject those resources. An authenticated account and document processing are required; exposure is limited to supported file types readable by the Open-Xchange service account and internal network-service discovery.

The record

CVE
CVE-2023-26435
Published
Jun 20, 2023
Updated
Aug 2, 2024
Vendor
Open-Xchange GmbH
Product
OX App Suite
Classifications
CWE-918, T1005, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=0 <=7.10.6-rev7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open-Xchange GmbH · OX App Suiteversion=0 <=7.10.6-rev7

Published CVSS scores

5.0Open-Xchange GmbHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/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.

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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1005Data from Local System
T1046Network Service Discovery

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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