CVE-2020-8892Network attack vector

Password-guessing protection bypass via HTTP PUT

Published Feb 11, 2020 · Updated Aug 4, 2024

Authentication protection bypass in MISP before 2.4.121 allows remote attackers to evade login brute-force limits with HTTP PUT requests. UsersController::login recorded failed attempts in the Bruteforce model only for POST requests, leaving invalid PUT logins uncounted. The bypass permits repeated password guesses; account access still requires discovery of a valid credential.

CVSS severity8.1
High
EPSS probability1.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication protection bypass in MISP before 2.4.121 allows remote attackers to evade login brute-force limits with HTTP PUT requests. UsersController::login recorded failed attempts in the Bruteforce model only for POST requests, leaving invalid PUT logins uncounted. The bypass permits repeated password guesses; account access still requires discovery of a valid credential.

The record

CVE
CVE-2020-8892
Published
Feb 11, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1110.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1110.001Brute Force: Password Guessing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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