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CVE-2020-26877

17
FAUCET Score

CVE-2020-26877 describes an open redirect vulnerability in ApiFest OAuth 2.0 Server version 0.3.1, where the server fails to validate redirect URIs against registered client configurations. This flaw allows an attacker to manipulate the redirect_uri parameter to capture authorization codes, potentially leading to unauthorized access. The vulnerability has a CVSS v3.1 score of 6.1 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and impacting confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
0.3.1CPE matchmatch criteria
cpe:2.3:a:apifest:oauth_2.0_server:0.3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.79%
Probability of exploitation in next 30 days
EPSS Percentile
52.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0079 is in the 60th percentile among its peer group of 26,220 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 / apifest/apifest-oauth20
Third Party Advisory
tools.ietf.org / html/rfc6749
Third Party Advisory
apifest.org / index.html
Vendor Advisory