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CVE-2026-77134· NVD / CVE Program· CNA TYPO3

Broken Access Control in extension "femanager" (femanager)

The extension fails to require the dedicated admin confirmation token when processing an admin-approval request, so a regular user confirmation hash, obtainable by any visitor through the public resend-confirmation action, is sufficient to self-approve a pending account awaiting admin approval.

HighCVSS 8.3 · v4.0—No exploit Fix available

Noroxi analysis

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Published
Aug 25, 2026
Updated
Aug 26, 2026
EPSS
0.4% · 32th percentile
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Report tools

JSON

Action score

33

Monitor

Low priority for now.

CVSS
33 / 40 · 8.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · TYPO3
8.3
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (TYPO3). Independent of NVD's CPE analysis and usually ahead of it.

  • TYPO3 Extension "femanager"

    • 13.0.0 and later · before 13.3.5affected · semver
    • 8.0.0 and later · before 8.4.2affected · semver
    • 7.0.0 and later · before 7.5.5affected · semver
    • before 6.4.5affected · semver

Other highest-scoring records for the same primary product.

  • CVE-2026-77146Broken Access Control in extension "femanager" (femanager)
    33Monitor
  • CVE-2026-77135Information Disclosure in extension "femanager" (femanager)
    32Monitor
  • CVE-2026-77133Broken Access Control in extension "femanager" (femanager)
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
TYPO3 Extension "femanager"13.3.5Vendor (CNA)
TYPO3 Extension "femanager"6.4.5Vendor (CNA)
TYPO3 Extension "femanager"7.5.5Vendor (CNA)
TYPO3 Extension "femanager"8.4.2Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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