Is CVE-2020-8890 in the CISA KEV catalog?

No. CVE-2020-8890 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-8890?

CVE-2020-8890 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-8890?

CVE-2020-8890 has an EPSS score of 1.09% (61th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-8890?

Upgrade misp to 2.4.121 or later.

CVE & CISA-KEV Catalog

CVE-2020-8890

MEDIUM

5.9

CVSS v3

NVD

Description

An issue was discovered in MISP before 2.4.121. It mishandled time skew (between the machine hosting the web server and the machine hosting the database) when trying to block a brute-force series of invalid requests.

CWE-367TOCTOU Race Condition

How to fix

Remediation Available

mispNVD

Affected:< 2.4.121Fixed in:2.4.121CVE-2020-8890derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.09%probability of exploitation in 30 days

61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

Patch3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-22.