CVE-2020-5302Network attack vector

Unauthenticated steward actions via nickname impersonation

Published Apr 7, 2020 · Updated Aug 4, 2024

Improper access control in examknow MH-WikiBot allows remote attackers to execute steward commands through its IRC interface. The QuIRC.py callback supplied only the nickname to bot.py, whose on_message handler compared it with the steward list without verifying the account hostmask. Network access to the bot's IRC channel is sufficient, and successful exploitation permits privileged block or unblock actions against wiki accounts.

CVSS severity8.2
High
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in examknow MH-WikiBot allows remote attackers to execute steward commands through its IRC interface. The QuIRC.py callback supplied only the nickname to bot.py, whose on_message handler compared it with the steward list without verifying the account hostmask. Network access to the bot's IRC channel is sufficient, and successful exploitation permits privileged block or unblock actions against wiki accounts.

The record

CVE
CVE-2020-5302
Published
Apr 7, 2020
Updated
Aug 4, 2024
Vendor
examknow
Product
MH-WikiBot
Classifications
CWE-269, CWE-284, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< commit 23d9d5b0a59667a5d6816fdabb960b537a5f9ed1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

examknow · MH-WikiBotversion=< commit 23d9d5b0a59667a5d6816fdabb960b537a5f9ed1

Published CVSS scores

6.4NISTAV:N/AC:L/Au:N/C:P/I:P/A:N
6.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
8.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

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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