CVE-2026-6816Public exploitNetwork attack vector

Privileged MFA secret access via overbroad route checks

Published May 28, 2026 · Updated May 28, 2026

Access bypass in Drupal TFA Basic Plugins 7.x-1.0 through 7.x-1.2 allows remote authenticated users to access other users' recovery codes. The tfa_basic_setup_access callback authorizes secret-bearing setup and recovery routes for a different account without requiring account ownership. A role with the Administer TFA for other users permission and the target user's identifier is required; successful requests expose TOTP seeds or recovery codes and can alter TFA enrollment.

CVSS severity5.1
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access bypass in Drupal TFA Basic Plugins 7.x-1.0 through 7.x-1.2 allows remote authenticated users to access other users' recovery codes. The tfa_basic_setup_access callback authorizes secret-bearing setup and recovery routes for a different account without requiring account ownership. A role with the Administer TFA for other users permission and the target user's identifier is required; successful requests expose TOTP seeds or recovery codes and can alter TFA enrollment.

The record

CVE
CVE-2026-6816
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Avatar Uploader Project
Product
TFA Basic plugins
Classifications
CWE-267, CAPEC-180, T1556.006
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=7.x-1.0 <=7.x-1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Avatar Uploader Project · TFA Basic pluginsversion=7.x-1.0 <=7.x-1.2

Published CVSS scores

5.1Drupal.orgCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
3.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-267Privilege Defined With Unsafe Actions
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1556.006Modify Authentication Process: Multi-Factor Authentication

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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