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  4. CVE 2026 124028 mistralrs before 095 tool call injection via
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Back to active CVEs
Low · CVSS 2.3CVE-2026-124028

mistral.rs before 0.9.5 Tool Call Injection via mistralrs-core Output ParsersCVE-2026-124028

Answer in brief

CVE-2026-124028 records a Low severity (CVSS 2.3) vulnerability in mistral.rs before 0.9.5 Tool Call Injection via mistralrs-core Output Parsers. The current sources do not mark it as known exploited. The current feed maps EricLBuehler/mistral.rs (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 Nov 6, 2026Updated Nov 6, 2026Source checked Nov 6, 2026First seen by HOL Nov 6, 2026Material review Nov 6, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-140
Source
CVE List V5
Source checked
Nov 6, 2026
References
6 linked sources
Open source record

Key facts

Risk
Low · CVSS 2.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 2.3. 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 EricLBuehler/mistral.rs (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
EricLBuehler/mistral.rsgeneric>=0 <0.9.50.9.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for EricLBuehler/mistral.rs.
  2. 2Review the reported fix. Update EricLBuehler/mistral.rs to 0.9.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 6, 2026

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

  2. Source modified

    Nov 6, 2026

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

  3. First seen by HOL

    Nov 6, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

mistral.rs before 0.9.5 contains a delimiter injection vulnerability in mistralrs-core that allows attackers to inject tool calls by placing delimiter strings in text the model quotes. Attackers controlling documents, web pages or tool outputs can embed tags like </tool_call> to make qwen-xml, gemma4 or reasoning parsers return extra calls to declared tools with attacker-chosen arguments.

Quoted source text, attributed separately from HOL analysis.