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Vulnerability record · public intelligence
CVE-2021-23357
LOW

Directory Traversal

Published Mar 15, 2021 · Updated Oct 23, 2026

Severity · CVSSLOW · 3.3
Known exploitationNot listed
EPSS / likelihood0.53%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Oct 23, 2026

Directory Traversal

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

All versions of package github.com/tyktechnologies/tyk/gateway are vulnerable to Directory Traversal via the handleAddOrUpdateApi function. This function is able to delete arbitrary JSON files on the disk where Tyk is running via the management API. The APIID is provided by the user and this value is then used to create a file on disk. If there is a file found with the same name then it will be deleted and then re-created with the contents of the API creation request.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CVENVDEPSS
SSVC priority
LOW
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. snyk.io ↗
  2. Source repository ↗

Record history

Published Mar 15, 2021 · Last refreshed Oct 23, 2026