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  4. CVE 2026 107169 m17n lib null pointer write in readmtextelement
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Back to active CVEs
Medium · CVSS 6.2CVE-2026-107169

M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8CVE-2026-107169

Answer in brief

CVE-2026-107169 records a Medium severity (CVSS 6.2) vulnerability in M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8. The current sources do not mark it as known exploited. The current feed maps Red Hat/m17n-lib (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 7, 2026Updated Oct 7, 2026Source checked Oct 7, 2026First seen by HOL Oct 7, 2026Material review Oct 7, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.2
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/m17n-lib (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/m17n-libgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/m17n-lib.
  2. 2Review the reported fix. Source-reported workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Evidence timeline and material changes

  1. Published upstream

    Oct 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 7, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in m17n-lib. An attacker could provide specially crafted or truncated UTF-8 input to trigger an unhandled null pointer dereference during text processing. This issue causes the application to crash unexpectedly, resulting in a Denial of Service (DoS).

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.ymlSame generic ecosystem
  • Backstage: Configuration bypass in TechDocs mkdocs.yml sanitizationSame generic ecosystem
  • Backstage: Improper validation of TechDocs MkDocs configurationSame generic ecosystem
  • Backstage: Improper input validation in Confluence to Markdown scaffolder moduleSame generic ecosystem
  • Backstage: Improper repository path validation in a Scaffolder backend moduleSame generic ecosystem
  • Backstage: Sensitive information disclosure in Kubernetes resource queriesSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-476
Source
CVE List V5
Source checked
Oct 7, 2026
References
2 linked sources
Open source record