CVE-2026-91849Medium· 6.3▾ TwilightPoC available

A security flaw has been discovered in WuzhiCMS up to 4.1.0

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score47/ 100 · Moderate

impact 34.7 · likelihood 0.1 · exploitation 12

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

A public proof-of-concept already exists for this vulnerability — see Exploit availability below.

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Published

Sep 15, 2026

Updated

Sep 17, 2026

CVSS

6.3

Vendor

—

Product

WuzhiCMS

CWE

CWE-284, CWE-434

Depth score

47 · Moderate

EPSS

0.37% · p30

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

decided 2026-09-17

Exploitation: poc
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 17.

0.3% → 0.4%▲ 0.09%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 10 days

Sep 15, 2026Published
Disclosed via NVD
Sep 17, 2026Record revised
Last analysed / modified upstream
Sep 17, 2026EPSS first tracked
0.3%
Sep 17, 2026Public exploit observed
Exploit / PoC code exists
Sep 25, 2026EPSS peak
0.3% → 0.4%

CWE-284 CWE-434 #nvd #cve.org #exploit-available

Affected

WuzhiCMS 4.0
WuzhiCMS 4.1.0

Full technical detail▾

Overview

A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar of the component Avatar Upload. The manipulation of the argument File results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Change history

Field changes observed since this record was first indexed.

Sep 17, 2026Public exploit / PoC published

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org#exploit-available

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