# CVE-2026-109854: m17n-lib: A flaw was found in m17n-lib

CVE-2026-109854 is fixed in m17n-lib on 1 platform by DEBIAN-CVE-2026-109854 (version 1.8.7-1), released October 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-109854
- Priority: Routine
- CVSS: 2.5 (low)
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | m17n-lib Debian 14 | 1.8.7-1 | [DEBIAN-CVE-2026-109854](https://patchblox.com/security/data/fix/linux/debian-cve-2026-109854.md) | Oct 20, 2026 |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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