CVE-2026-82813Public exploitNetwork attack vector

Authentication-state corruption via unvalidated redirect parameters

Published Aug 31, 2026 · Updated Aug 31, 2026

Authentication-state corruption in BENlabs TubeBuddy 5.8.0 through 5.8.4 allows remote attackers to overwrite a channel token via a crafted link. The redirect content script stores attacker-controlled t and c parameters in Chrome synced storage without validating token authenticity or binding the request to an initiated flow. A victim must open the link; the confirmed consequence is corrupted authentication state and interrupted TubeBuddy functionality, not account takeover.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication-state corruption in BENlabs TubeBuddy 5.8.0 through 5.8.4 allows remote attackers to overwrite a channel token via a crafted link. The redirect content script stores attacker-controlled t and c parameters in Chrome synced storage without validating token authenticity or binding the request to an initiated flow. A victim must open the link; the confirmed consequence is corrupted authentication state and interrupted TubeBuddy functionality, not account takeover.

The record

CVE
CVE-2026-82813
Published
Aug 31, 2026
Updated
Aug 31, 2026
Vendor
BENlabs
Product
TubeBuddy
Classifications
CWE-345, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.8.0
  2. Affected versionversion=5.8.1
  3. Affected versionversion=5.8.2
  4. Affected versionversion=5.8.3
  5. Affected versionversion=5.8.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BENlabs · TubeBuddyversion=5.8.0; version=5.8.1; version=5.8.2; version=5.8.3; version=5.8.4

Published CVSS scores

5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.4VulDB CNACVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
5.4VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
6.4VulDB CNAAV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:UR

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-345Insufficient Verification of Data Authenticity
T1204.002User Execution: Malicious Link

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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