CVE-2023-26429

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-20 · updated 2026-06-17
Weakness: CWE-77

Description

Control characters were not removed when exporting user feedback content. This allowed attackers to include unexpected content via user feedback and potentially break the exported data structure. We now drop all control characters that are not whitespace character during the export. No publicly available exploits are known.

Affected products

Open-Xchange Appsuite Backend: before 7.10.6; from 8.0.0 before 8.11.0; 7.10.6, 7.10.6-revision_39 — fixed in 7.10.6, 8.11.0

How to fix

Upgrade to a fixed version: Open-Xchange Appsuite Backend 7.10.6, 8.11.0. Check the vendor advisory for mitigations.

References

http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.html
http://seclists.org/fulldisclosure/2023/Jun/8
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.json
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf
http://packetstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.html
http://seclists.org/fulldisclosure/2023/Jun/8
https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.json
https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf

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