TI-2023-11584 Aliases CVE-2023-26436 GHSA-5xxc-86g5-876q

Code injection in Open-Xchange GmbH OX App Suite

MEDIUM 41CWE-94Published 2023-06-20 · Updated 2024-08-02

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.

Summary

Attackers with access to the "documentconverterws" API were able to inject serialized Java objects, that were not properly checked during deserialization. Access to this API endpoint is restricted to local networks by default. Arbitrary code could be injected that is being executed when processing the request. A check has been introduced to restrict processing of legal and expected classes for this API. We now log a warning in case there are attempts to inject illegal classes. No publicly available exploits are known.

Why it matters now

EPSS 0.01252 69th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Open-Xchange GmbH	OX App Suite	up to 7.10.6-rev7	—	No fix listed	CNA

OX App Suite VendorOpen-Xchange GmbH Affected up to 7.10.6-rev7 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:open-xchange:open-xchange_appsuite_backend::::::::	before 7.10.6	Vulnerable	Open-Xchange GmbH
cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:::::::*	7.10.6	Vulnerable	Open-Xchange GmbH
cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:revision_39::::::	7.10.6 revision_39	Vulnerable	Open-Xchange GmbH

cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:*:*:*:*:*:*:*:* Versions before 7.10.6 Vulnerable ·Open-Xchange GmbH
cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:*:*:*:*:*:*:* Versions 7.10.6 Vulnerable ·Open-Xchange GmbH
cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:revision_39:*:*:*:*:*:* Versions 7.10.6 revision_39 Vulnerable ·Open-Xchange GmbH

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2023-06-20
OX App Suite — documentation.open-xchange.com/appsuite/security/advisories…
9 records Highest priority Priority MEDIUM 1 MEDIUM, 8 LOW
Other records, highest priority first
- TI-2023-11576 Authorization bypass in Open-Xchange GmbH OX App SuitePriority LOW 31
- TI-2023-11577 Command injection in Open-Xchange GmbH OX App SuitePriority LOW 25
- TI-2023-11583 Server-side request forgery in Open-Xchange GmbH OX App SuitePriority LOW 24
Show all 9 records → Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-26436
2026-10-03 Alias added: GHSA-5xxc-86g5-876q

References

Advisory 3

Other 1

https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf

TI-2023-11591 SQL injection in Open-Xchange GmbH OX App Suite CVSS 3.1CRITICAL 9.8
TI-2023-11598 Functions with insufficient randomness were used to generate authorization tokens of the… CVSS 3.1HIGH 7.5
TI-2023-11576 Authorization bypass in Open-Xchange GmbH OX App Suite CVSS 3.1MEDIUM 6.5
TI-2016-05883 Cross-site scripting (XSS) vulnerability in Open-Xchange (OX) AppSuite backend before… CVSS 3.0MEDIUM 6.1
TI-2023-11577 Command injection in Open-Xchange GmbH OX App Suite CVSS 3.1MEDIUM 5.3
TI-2023-11583 Server-side request forgery in Open-Xchange GmbH OX App Suite CVSS 3.1MEDIUM 5.0

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences