CVE-2021-21395Public exploitNetwork attack vector

Password change via missing reset form key

Published Jan 27, 2023 · Updated Mar 10, 2025

Cross-site request forgery in OpenMage LTS before 19.4.22 and 20.0.0 through 20.0.18 allows remote attackers to change account passwords. The resetforgottenpassword.phtml form omits the per-session form_key field, so the reset submission is not bound to the user's session. Exploitation requires a user to open a valid reset link and submit a new password while an attacker times a forged request, resulting in an attacker-chosen password.

CVSS severity4.2
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in OpenMage LTS before 19.4.22 and 20.0.0 through 20.0.18 allows remote attackers to change account passwords. The resetforgottenpassword.phtml form omits the per-session form_key field, so the reset submission is not bound to the user's session. Exploitation requires a user to open a valid reset link and submit a new password while an attacker times a forged request, resulting in an attacker-chosen password.

The record

CVE
CVE-2021-21395
Published
Jan 27, 2023
Updated
Mar 10, 2025
Vendor
OpenMage
Product
OpenMage LTS
Classifications
CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 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=< 19.4.22
  2. Affected versionversion=>= 20.0.0, < 20.0.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenMage · OpenMage LTSversion=< 19.4.22; version=>= 20.0.0, < 20.0.19

Published CVSS scores

4.2GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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.

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 exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1190Exploit Public-Facing Application

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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