CVE-2022-4644Network attack vector

User redirection via trusted X-Forwarded-Host header

Published Dec 22, 2022 · Updated Apr 10, 2025

Open redirect in IKUS Software Rdiffweb before 2.5.4 allows remote attackers to send users to an attacker-chosen site. The Root application proxy configuration in rdiffweb/rdw_app.py trusts the X-Forwarded-Host request header when constructing absolute URLs used in redirect responses. A victim must follow an attacker-crafted Rdiffweb link, after which the redirect can support phishing or credential capture on an attacker-controlled site.

CVSS severity5.3
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in IKUS Software Rdiffweb before 2.5.4 allows remote attackers to send users to an attacker-chosen site. The Root application proxy configuration in rdiffweb/rdw_app.py trusts the X-Forwarded-Host request header when constructing absolute URLs used in redirect responses. A victim must follow an attacker-crafted Rdiffweb link, after which the redirect can support phishing or credential capture on an attacker-controlled site.

The record

CVE
CVE-2022-4644
Published
Dec 22, 2022
Updated
Apr 10, 2025
Vendor
IKUS Software
Product
Rdiffweb
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 2025Record 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=unspecified <2.5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IKUS Software · Rdiffwebversion=unspecified <2.5.4

Published CVSS scores

6.1GitLabCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Phishing: Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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