CVE-2020-8891

MEDIUMNVD 5.95.9—

5.9

An issue was discovered in MISP before 2.4.121. It did not canonicalize usernames when trying to block a brute-force series of invalid requests.

CVSS v3: 5.9
EG Score: 5.9(medium)
EPSS: 62.3%
KEV: Not listed

Published

February 12, 2020

Last Modified

November 21, 2024

References (6)

cve@mitrehttps://github.com/MISP/MISP/commit/934c82819237b4edf1da64587b72a87bec5dd520
cve@mitrehttps://github.com/MISP/MISP/commit/c1a0b3b2809b21b4df8c1efbc803aff700e262c3
cve@mitrehttps://github.com/MISP/MISP/compare/v2.4.120...v2.4.121
af854a3a-2127-422b-91ae-364da2661108https://github.com/MISP/MISP/commit/934c82819237b4edf1da64587b72a87bec5dd520
af854a3a-2127-422b-91ae-364da2661108https://github.com/MISP/MISP/commit/c1a0b3b2809b21b4df8c1efbc803aff700e262c3
af854a3a-2127-422b-91ae-364da2661108https://github.com/MISP/MISP/compare/v2.4.120...v2.4.121

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-8891?

CVE-2020-8891 is a medium vulnerability published on February 12, 2020. An issue was discovered in MISP before 2.4.121. It did not canonicalize usernames when trying to block a brute-force series of invalid requests.

When was CVE-2020-8891 disclosed?

CVE-2020-8891 was first published in the National Vulnerability Database on February 12, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-8891 actively exploited?

CVE-2020-8891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8891?

CVE-2020-8891 has a CVSS v3 base score of 5.9 (NVD).

How do I remediate CVE-2020-8891?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8891, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2020-8891

📅 Published

🔄 Last Modified

🔗 References (6)