specialk Simple Ajax Chat Plugin up to 20260217 on WordPress c cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in specialk Simple Ajax Chat Plugin up to 20260217 on WordPress and classified as problematic. This issue affects some unknown processing. Executing a manipulation of the argument c can lead to cross site scripting. This vulnerability is tracked as CVE-2026-2987. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in specialk Simple Ajax Chat Plugin up to 20260217 on WordPress and classified as problematic. This vulnerability affects an unknown code. The manipulation of the argument c with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

The Simple Ajax Chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'c' parameter in versions up to, and including, 20260217 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The weakness was disclosed by Kazuma Matsumoto. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-2987 since 02/22/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

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

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (Wordfence): 🔒

CVSSv2info

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

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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

02/22/2026 CVE reserved
03/12/2026 +18 days Advisory disclosed
03/12/2026 +0 days VulDB entry created
03/17/2026 +5 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Researcher: Kazuma Matsumoto
Status: Not defined

CVE: CVE-2026-2987 (🔒)
GCVE (CVE): GCVE-0-2026-2987
GCVE (VulDB): GCVE-100-350662

Entryinfo

Created: 03/12/2026 15:36
Updated: 03/17/2026 10:31
Changes: 03/12/2026 15:36 (65), 03/17/2026 10:31 (1)
Complete: 🔍
Cache ID: 216::103

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