CVE-2021-34633Network attack vector

Stored cross-site scripting via forged admin request

Published Aug 5, 2021 · Updated Sep 16, 2024

Cross-site request forgery in Andrew Ensley Youtube Feeder 2.0.1 and earlier allows remote attackers to inject stored web scripts. The printAdminPage function in youtube-feeder.php accepts a state-changing request without CSRF validation and stores attacker-controlled script content. Exploitation requires an authenticated administrator to act on the forged request, after which the stored script executes in affected site pages.

CVSS severity8.8
High
EPSS probability0.68%
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 Andrew Ensley Youtube Feeder 2.0.1 and earlier allows remote attackers to inject stored web scripts. The printAdminPage function in youtube-feeder.php accepts a state-changing request without CSRF validation and stores attacker-controlled script content. Exploitation requires an authenticated administrator to act on the forged request, after which the stored script executes in affected site pages.

The record

CVE
CVE-2021-34633
Published
Aug 5, 2021
Updated
Sep 16, 2024
Vendor
Andrew Ensley
Product
Youtube Feeder
Classifications
CWE-352, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2021CVE 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=2.0.1 <=2.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Andrew Ensley · Youtube Feederversion=2.0.1 <=2.0.1

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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-352Cross-Site Request Forgery (CSRF)
T1059.007JavaScript/JScript

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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