Spencer Haws Link Whisper Free Plugin up to 0.9.0 on WordPress REST Endpoint authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Spencer Haws Link Whisper Free Plugin up to 0.9.0 on WordPress. This affects an unknown part of the component REST Endpoint. Executing a manipulation can lead to authorization. This vulnerability is registered as CVE-2026-1900. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Spencer Haws Link Whisper Free Plugin up to 0.9.0 on WordPress and classified as critical. This vulnerability affects an unknown functionality of the component REST Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Link Whisper Free WordPress plugin before 0.9.1 has a publicly accessible REST endpoint that allows unauthenticated settings updates.

The weakness was published by Yiğit Ibrahim Sağlam. The advisory is shared for download at wpscan.com. This vulnerability was named CVE-2026-1900 since 02/04/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 0.9.1 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Link Whisper Free Plugin 0.9.1

Timelineinfo

02/04/2026 CVE reserved
04/07/2026 +61 days Advisory disclosed
04/07/2026 +0 days VulDB entry created
04/07/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wpscan.com
Researcher: Yiğit Ibrahim Sağlam
Status: Confirmed

CVE: CVE-2026-1900 (🔒)
GCVE (CVE): GCVE-0-2026-1900
GCVE (VulDB): GCVE-100-355720

Entryinfo

Created: 04/07/2026 10:25
Changes: 04/07/2026 10:25 (57)
Complete: 🔍
Cache ID: 216::103

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