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CVE-2020-18698

30
FAUCET Score

CVE-2020-18698 describes an Improper Authentication vulnerability in Lin-CMS-Flask v0.1.1, specifically within the 'login' function of 'app/api/cms/user.py'. This critical vulnerability, rated 9.8 CVSS, allows unauthenticated remote attackers to perform unrestricted brute-force login attempts, potentially leading to full compromise of confidentiality, integrity, and availability. Despite its high severity, 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
0.1.1CPE matchmatch criteria
cpe:2.3:a:talelin:lin-cms-flask:0.1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.03%
Probability of exploitation in next 30 days
EPSS Percentile
79.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0203 is in the 68th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

pipGHSA-h6r2-pgvx-683ccritical

Lin-CMS-Flask vulnerable to Improper Authentication

May 24, 2022

References

cwe.mitre.org / data/definitions/307.html
Third Party Advisory
github.com / TaleLin/lin-cms-flask/issues/27
ExploitThird Party Advisory