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CVE-2021-23357

18
FAUCET Score

CVE-2021-23357 describes a directory traversal vulnerability in all versions of the github.com/tyktechnologies/tyk/gateway package. This flaw allows an authenticated attacker to delete arbitrary JSON files on the Tyk server via the management API by manipulating the APIID parameter. Rated as Medium severity (CVSS 5.3), it requires local access and low privileges, with potential impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:tyk:tyk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.3LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 93rd percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / TykTechnologies/tyk/issues/3390
ExploitThird Party Advisory
snyk.io / vuln/SNYK-GOLANG-GITHUBCOMTYKTECHNOLOGIESTYKGATEWAY-1078516
Third Party Advisory