CVE-2026-73195

EUVD-2026-77475

14.09.2026, 14:17

Improper Encoding or Escaping of Output vulnerability in Apache Syncope.

Authenticated users can store a spreadsheet formula payload in one of their own plain attributes. When such users are included in a CSV export and the generated CSV file is opened by a spreadsheet application, the formula may be executed.

This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.

Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
apache	CNA	7.3 HIGH	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
apache	syncope	𝑥 ≤ 3.0.16	CNA
apache	syncope	𝑥 ≤ 4.0.7	CNA
apache	syncope	𝑥 ≤ 4.1.2	CNA

Common Weakness Enumeration

CWE-116 - Improper Encoding or Escaping of Output
The software prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

References

https://lists.apache.org/thread/lg1opo92y789v259folgvmg6n28l42cj

http://www.openwall.com/lists/oss-security/2026/09/14/6