CVE-2021-34656Network attack vector

Reflected XSS via unescaped vws_notice output

Published Aug 16, 2021 · Updated May 5, 2025

Reflected XSS in VideoWhisper 2Way VideoCalls and Random Chat 5.2.7 and earlier allows remote attackers to inject web scripts. The vws_notice function in inc/requirements.php emits attacker-controlled content into an HTML response without neutralizing executable markup. Exploitation requires a user to follow a crafted request, after which the script executes in that user's browser under the WordPress site's origin.

CVSS severity6.1
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in VideoWhisper 2Way VideoCalls and Random Chat 5.2.7 and earlier allows remote attackers to inject web scripts. The vws_notice function in inc/requirements.php emits attacker-controlled content into an HTML response without neutralizing executable markup. Exploitation requires a user to follow a crafted request, after which the script executes in that user's browser under the WordPress site's origin.

The record

CVE
CVE-2021-34656
Published
Aug 16, 2021
Updated
May 5, 2025
Vendor
VideoWhisper
Product
2Way VideoCalls and Random Chat – HTML5 Webcam Videochat
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2021CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.2.7 <=5.2.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

VideoWhisper · 2Way VideoCalls and Random Chat – HTML5 Webcam Videochatversion=5.2.7 <=5.2.7

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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