WP Chill Filr Plugin up to 1.2.12 on WordPress unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability was found in WP Chill Filr Plugin up to 1.2.12 on WordPress. It has been classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to unrestricted upload. This vulnerability is documented as CVE-2026-28133. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in WP Chill Filr Plugin up to 1.2.12 on WordPress and classified as critical. This issue affects an unknown code block. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Unrestricted Upload of File with Dangerous Type vulnerability in WP Chill Filr filr-protection allows Upload a Web Shell to a Web Server.This issue affects Filr: from n/a through <= 1.2.12.

The weakness was released by Que Thanh Tuan. It is possible to read the advisory at patchstack.com. The identification of this vulnerability is CVE-2026-28133 since 02/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/11/2026). The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-9783). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 8.1
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/25/2026 CVE reserved
03/05/2026 +8 days Advisory disclosed
03/05/2026 +0 days VulDB entry created
03/11/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: patchstack.com
Researcher: Que Thanh Tuan
Status: Not defined

CVE: CVE-2026-28133 (🔒)
GCVE (CVE): GCVE-0-2026-28133
GCVE (VulDB): GCVE-100-349151
EUVD: 🔒

Entryinfo

Created: 03/05/2026 08:37
Updated: 03/11/2026 21:46
Changes: 03/05/2026 08:37 (55), 03/05/2026 08:51 (1), 03/07/2026 17:21 (1), 03/11/2026 21:46 (11)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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