CVE-2022-1165Public exploitNetwork attack vector

Arbitrary IP blocking via trusted forwarding headers

Published Apr 4, 2022 · Updated Aug 2, 2024

Authorization bypass in Plugin Planet Blackhole for Bad Bots before 3.3.2 allows remote attackers to block arbitrary IP addresses. The blackhole request handler accepts client-controlled CF-CONNECTING-IP, CLIENT-IP, and similar headers as the visitor address and writes that value to the bad-bot block list. No authentication is required, but the attacker must know or discover the site's blackhole URL; a request can block chosen visitors or trusted crawlers, or spoof an address to evade an existing block.

CVSS severity9.1
Critical
EPSS probability1.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Plugin Planet Blackhole for Bad Bots before 3.3.2 allows remote attackers to block arbitrary IP addresses. The blackhole request handler accepts client-controlled CF-CONNECTING-IP, CLIENT-IP, and similar headers as the visitor address and writes that value to the bad-bot block list. No authentication is required, but the attacker must know or discover the site's blackhole URL; a request can block chosen visitors or trusted crawlers, or spoof an address to evade an existing block.

The record

CVE
CVE-2022-1165
Published
Apr 4, 2022
Updated
Aug 2, 2024
Vendor
Plugin Planet
Product
Blackhole for Bad Bots
Classifications
CWE-639, T1562.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=3.3.2 <3.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Plugin Planet · Blackhole for Bad Botsversion=3.3.2 <3.3.2

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
6.4NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1562.001Impair Defenses: Disable or Modify Tools

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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