CVE-2025-53637

Meshtastic allows Command Injection in GitHub Action

HIGH
8
CVSS Score
Published: July 10, 2025 at 09:31 PM UTC
Updated: June 17, 2026 at 09:38 AM UTC
2 products affected across 1 vendorMeshtastic FirmwareMeshtastic

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Severity
HIGH8
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

Meshtastic is an open source mesh networking solution. The main_matrix.yml GitHub Action is triggered by the pull_request_target event, which has extensive permissions, and can be initiated by an attacker who forked the repository and created a pull request. In the shell code execution part, user-controlled input is interpolated unsafely into the code. If this were to be exploited, attackers could inject unauthorized code into the repository. This vulnerability is fixed in 2.6.6.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.6.6
Affected range stops below 2.6.6, so it looks safe — our inference, not a vendor statement
v < 2.6.6
Affected range stops below 2.6.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78

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