CVE-2022-22691Public exploitNetwork attack vector

Account takeover via poisoned password-reset URL

Published Jan 18, 2022 · Updated Sep 16, 2024

Host-header poisoning in Umbraco CMS before 9.2.0 allows remote attackers to disclose password-reset tokens through crafted reset URLs. The password-reset component uses the request Host value as the base of a callback URL without validating it against the site's configured hostname. Exploitation requires an unset application URL, acceptance of the crafted hostname, and a recipient who follows the resulting link, exposing the token and enabling account takeover.

CVSS severity7.4
High
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Host-header poisoning in Umbraco CMS before 9.2.0 allows remote attackers to disclose password-reset tokens through crafted reset URLs. The password-reset component uses the request Host value as the base of a callback URL without validating it against the site's configured hostname. Exploitation requires an unset application URL, acceptance of the crafted hostname, and a recipient who follows the resulting link, exposing the token and enabling account takeover.

The record

CVE
CVE-2022-22691
Published
Jan 18, 2022
Updated
Sep 16, 2024
Vendor
Umbraco
Product
Umbraco CMS
Classifications
CWE-444, CWE-640
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <9.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Umbraco · Umbraco CMSversion=unspecified <9.2.0

Published CVSS scores

7.4GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/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-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-640Weak Password Recovery Mechanism for Forgotten Password

Public exploit references

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Technologies

Your stack

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Your stack

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