merkulove UnGrabber Plugin up to 3.1.3 on WordPress authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in merkulove UnGrabber Plugin up to 3.1.3 on WordPress. Impacted is an unknown function. The manipulation results in authorization. This vulnerability is known as CVE-2025-66149. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in merkulove UnGrabber Plugin up to 3.1.3 on WordPress. Affected is an unknown part. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on integrity, and availability. CVE summarizes:

Missing Authorization vulnerability in merkulove UnGrabber allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects UnGrabber: from n/a through 3.1.3.

The weakness was published by Phat Rio. The advisory is shared for download at vdp.patchstack.com. This vulnerability is traded as CVE-2025-66149 since 11/21/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/01/2026).

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-2025-206076). Once again VulDB remains the best 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: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (Patchstack): 🔒

CVSSv2info

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

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
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

11/21/2025 CVE reserved
12/31/2025 +40 days Advisory disclosed
12/31/2025 +0 days VulDB entry created
01/01/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: vdp.patchstack.com
Researcher: Phat Rio
Status: Not defined

CVE: CVE-2025-66149 (🔒)
GCVE (CVE): GCVE-0-2025-66149
GCVE (VulDB): GCVE-100-339300
EUVD: 🔒

Entryinfo

Created: 12/31/2025 22:57
Updated: 01/01/2026 04:58
Changes: 12/31/2025 22:57 (63), 01/01/2026 04:58 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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