CVE-2026-6218Public exploitNetwork attack vector

Script execution via unsafe error-detail HTML rendering

Published Apr 13, 2026 · Updated Apr 13, 2026

DOM-based cross-site scripting in ytDownloader 3.20.0 through 3.20.2 allows remote attackers to execute script via crafted error data. The Error Details Panel assigns attacker-controlled error content to innerHTML without encoding or sanitization instead of rendering plain text. A user must trigger display of the crafted error; the published assessment limits the resulting impact to modification within the renderer.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based cross-site scripting in ytDownloader 3.20.0 through 3.20.2 allows remote attackers to execute script via crafted error data. The Error Details Panel assigns attacker-controlled error content to innerHTML without encoding or sanitization instead of rendering plain text. A user must trigger display of the crafted error; the published assessment limits the resulting impact to modification within the renderer.

The record

CVE
CVE-2026-6218
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
aandrew-me
Product
ytDownloader
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record 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=3.20.0
  2. Affected versionversion=3.20.1
  3. Affected versionversion=3.20.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

aandrew-me · ytDownloaderversion=3.20.0; version=3.20.1; version=3.20.2

Published CVSS scores

5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/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 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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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