CVE-2024-45522Network attack vector

Account takeover via poisoned password-reset links

Published Sep 1, 2024 · Updated Sep 3, 2024

Host validation bypass in Linen before cd37c3e allows remote attackers to steal reset tokens through attacker-controlled domains. The create handler in apps/web/pages/api/forgot-password/index.ts passes the request body's origin, or a header-derived host, directly to ResetPasswordMailer without restricting the domain. A recipient who follows the resulting poisoned link sends the reset token to the attacker-controlled host, enabling takeover of that Linen account.

CVSS severity9.8
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Host validation bypass in Linen before cd37c3e allows remote attackers to steal reset tokens through attacker-controlled domains. The create handler in apps/web/pages/api/forgot-password/index.ts passes the request body's origin, or a header-derived host, directly to ResetPasswordMailer without restricting the domain. A recipient who follows the resulting poisoned link sends the reset token to the attacker-controlled host, enabling takeover of that Linen account.

The record

CVE
CVE-2024-45522
Published
Sep 1, 2024
Updated
Sep 3, 2024
Vendor
Linen
Product
Linen
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=0 <cd37c3e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Linen · Linenversion=0 <cd37c3e

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

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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