CVE-2020-19951Network attack vector

Sensitive component access via missing CSRF protection

Published Sep 23, 2021 · Updated Aug 4, 2024

Cross-site request forgery in YzmCMS 5.5 allows remote attackers to access sensitive application components via crafted requests. The /controller/pay.class.php handler does not enforce a request-origin or anti-CSRF token check, allowing a malicious webpage to submit state-changing requests in a logged-in browser context. Exploitation requires a victim to load attacker-controlled content while authenticated to YzmCMS; the record describes access to sensitive components but does not specify data alteration or service interruption details.

CVSS severity8.8
High
EPSS probability0.56%
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 YzmCMS 5.5 allows remote attackers to access sensitive application components via crafted requests. The /controller/pay.class.php handler does not enforce a request-origin or anti-CSRF token check, allowing a malicious webpage to submit state-changing requests in a logged-in browser context. Exploitation requires a victim to load attacker-controlled content while authenticated to YzmCMS; the record describes access to sensitive components but does not specify data alteration or service interruption details.

The record

CVE
CVE-2020-19951
Published
Sep 23, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/C:P/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)

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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