CVE-2026-7581Public exploitNetwork attack vector

Unauthorized API actions via reflected Origin header

Published May 1, 2026 · Updated May 1, 2026

Permissive CORS in Alex Shnitman MeTube 2026.04.09 allows remote attackers to issue cross-origin API requests from a malicious webpage. The app/main.py on_prepare handler copies any Origin header into Access-Control-Allow-Origin, while Socket.IO accepts every origin. A user must visit attacker-controlled content; the resulting requests can start downloads, overwrite cookies, create subscriptions, or delete data.

CVSS severity4.3
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Permissive CORS in Alex Shnitman MeTube 2026.04.09 allows remote attackers to issue cross-origin API requests from a malicious webpage. The app/main.py on_prepare handler copies any Origin header into Access-Control-Allow-Origin, while Socket.IO accepts every origin. A user must visit attacker-controlled content; the resulting requests can start downloads, overwrite cookies, create subscriptions, or delete data.

The record

CVE
CVE-2026-7581
Published
May 1, 2026
Updated
May 1, 2026
Vendor
Alex Shnitman
Product
MeTube
Classifications
CWE-942, CWE-346, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 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?

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  1. Affected versionversion=2026.04.09

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alex Shnitman · MeTubeversion=2026.04.09

Published CVSS scores

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
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E: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 exploitPublished

Weakness, pattern, technique

CWE-942Permissive Cross-domain Policy with Untrusted Domains
CWE-346Origin Validation Error
T1189Drive-by Compromise

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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