Privoce Vocechat up to 0.9.121 Query Parameter widget.html welcome cross site scripting

Summaryinfo

A vulnerability was found in Privoce Vocechat up to 0.9.121. It has been classified as problematic. Impacted is an unknown function of the file widget.html of the component Query Parameter Handler. Performing a manipulation of the argument welcome results in cross site scripting. This vulnerability was named CVE-2026-116047. The attack may be initiated remotely. In addition, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability classified as problematic has been found in Privoce Vocechat up to 0.9.121. This affects an unknown code block of the file widget.html of the component Query Parameter Handler. The manipulation of the argument welcome with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-116047. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. By approaching the search of inurl:widget.html it is possible to find vulnerable targets with Google Hacking.

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

• Chat Software

Vendor

• Privoce

Name

• Vocechat

Version

• 0.9.121

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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CVSSv3info

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Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #994199: Privoce vocechat <=0.9.121 Improper Neutralization of Alternate XSS Syntax (by dyihan)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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