CVE-2023-26429

Control characters were not removed when exporting user feedback content. This allowed attackers...

3.5 Low

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: None

Exploit likelihood

0.79%Up 0.8 points since Jun 20, 2023

What each source reports

CVE List Score used 3.5

Record: CVE-2023-26429
CVSS 3.1: 3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Weakness: CWE-77
Updated: 2026-11-02

EUVDEUVD-2023-30249 3.5

Record: EUVD-2023-30249
CVSS 3.1: 3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-q84v-pwf5-wm4x 3.5

Control characters were not removed when exporting user feedback content. This allowed attackers...

Record: GHSA-q84v-pwf5-wm4x
CVSS 3.1: 3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Weakness: CWE-77
Updated: 2026-11-02

NVD 3.5

Record: CVE-2023-26429
CVSS 3.1: 3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-77
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-26429 is a low vulnerability (CVSS 3.5) in Open-xchange Appsuite Backend, published June 20, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.79%, the 56th percentile. No source names a fixed version.