CVE-2021-39394Public exploitNetwork attack vector

Unauthorized account and profile changes via forged requests

Published Aug 26, 2022 · Updated Aug 4, 2024

Cross-site request forgery in mm-wiki 0.2.1 allows remote attackers to add accounts or modify user information via a crafted request. The personal-information update and administrator user-creation actions accept forged cross-origin submissions without validating an anti-CSRF token. An authenticated victim must submit the request; adding arbitrary accounts requires an administrator session.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in mm-wiki 0.2.1 allows remote attackers to add accounts or modify user information via a crafted request. The personal-information update and administrator user-creation actions accept forged cross-origin submissions without validating an anti-CSRF token. An authenticated victim must submit the request; adding arbitrary accounts requires an administrator session.

The record

CVE
CVE-2021-39394
Published
Aug 26, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2022CVE 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

6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

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 exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

Public exploit references

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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