TI-2023-11586 Aliases CVE-2023-26438 GHSA-cp3q-q6mx-w79j

Server-side request forgery in Open-Xchange GmbH OX App Suite

LOW 21CWE-918Published 2023-08-02 · Updated 2024-08-02

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.

Why it matters now

EPSS 0.006 48th 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-rev42; up to 8.10	—	No fix listed	CNA

OX App Suite VendorOpen-Xchange GmbH Affected up to 7.10.6-rev42; up to 8.10 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
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:8.10.0:::::::*	8.10.0	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:8.10.0:*:*:*:*:*:*:* Versions 8.10.0 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 · 2023-08-02
OX App Suite — documentation.open-xchange.com/appsuite/security/advisories…
14 records Highest priority Priority MEDIUM 1 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2023-11591 SQL injection in Open-Xchange GmbH OX App SuitePriority MEDIUM 44
- TI-2023-11598 Functions with insufficient randomness were used to generate authorization tokens of the…Priority LOW 35
- TI-2023-11588 SQL injection in Open-Xchange GmbH OX App SuitePriority LOW 34
Show all 14 records → Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-26438
2026-10-03 Alias added: GHSA-cp3q-q6mx-w79j

References

Advisory 3

Other 1

https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf

TI-2023-11591 SQL injection in Open-Xchange GmbH OX App Suite CVSS 3.1CRITICAL 9.8
TI-2023-11584 Code injection in Open-Xchange GmbH OX App Suite CVSS 3.1HIGH 8.8
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

See all 13 →

Sources

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