CVE-2021-21269

Path Traversal in Keymaker

MEDIUM
6.5
CVSS Score
Published: January 20, 2021 at 05:50 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
2 products affected across 2 vendorsKeymakerProject Keymaker

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

Keymaker is a Mastodon Community Finder based Matrix Community serverlist page Server. In Keymaker before version 0.2.0, the assets endpoint did not check for the extension. The rust `join` method without checking user input might have made it abe to do a Path Traversal attack causing to read more files than allowed. This is fixed in version 0.2.0.

Affected

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

v < 0.2.0
Affected range stops below 0.2.0, so it looks safe — our inference, not a vendor statement
v < 0.2.0
Affected range stops below 0.2.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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