CVE-2026-109854
m17n-lib: Uninitialized stack read in ISO-2022 Compound Text UTF-8 decoding
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 13, 2026
Updated · October 13, 2026
Description
A flaw was found in m17n-lib. An attacker who supplies crafted input to an application processing ISO-2022 encoded text can cause the library to read uninitialized memory from the stack. If the application exposes or returns the decoded output, this flaw can result in unexpected behavior and limited information disclosure.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 2.5CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE-457 · Use of Uninitialized Variable