CVE-2026-77127Network attack vector

Authenticated database disclosure via unrestricted inline editing

Published Aug 25, 2026 · Updated Aug 25, 2026

Authorization bypass in TYPO3 Extension Modules before 7.10.4 and 8.0.0 through 8.1.3 allows remote authenticated users to read database fields. Its inline-editing AJAX endpoint accepts user-controlled table, field, and record identifiers without checking field-level view or edit permissions, then exposes the selected value in an error response. Access requires a valid low-privileged TYPO3 backend account authorized for the extension backend module; disclosed values include user password hashes.

CVSS severity6.0
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in TYPO3 Extension Modules before 7.10.4 and 8.0.0 through 8.1.3 allows remote authenticated users to read database fields. Its inline-editing AJAX endpoint accepts user-controlled table, field, and record identifiers without checking field-level view or edit permissions, then exposes the selected value in an error response. Access requires a valid low-privileged TYPO3 backend account authorized for the extension backend module; disclosed values include user password hashes.

The record

CVE
CVE-2026-77127
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.0TYPO3CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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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