How severe is CVE-2020-18698?

CVE-2020-18698 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-18698 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-18698?

CVE-2020-18698 affects Talelin Lin-cms-flask. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-18698?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-18698 published?

CVE-2020-18698 was published on 2021-08-16 and last updated on 2026-06-17.

CVE-2020-18698

CVE-2020-18698 is a critical-severity vulnerability in Talelin Lin-cms-flask with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Talelin Lin-cms-flask
Published: 2021-08-16
Last modified: 2026-06-17

Description

Improper Authentication in Lin-CMS-Flask v0.1.1 allows remote attackers to launch brute force login attempts without restriction via the 'login' function in the component 'app/api/cms/user.py'.

Frequently asked questions

What is CVE-2020-18698?: Improper Authentication in Lin-CMS-Flask v0.1.1 allows remote attackers to launch brute force login attempts without restriction via the 'login' function in the component 'app/api/cms/user.py'.
How severe is CVE-2020-18698?: CVE-2020-18698 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-18698 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-18698?: CVE-2020-18698 affects Talelin Lin-cms-flask. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-18698?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-18698 published?: CVE-2020-18698 was published on 2021-08-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:talelin:lin-cms-flask:0.1.1:*:*:*:*:*:*:*

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