CVE-2026-46516Public exploitNetwork attack vector

Privilege escalation via unescaped markdown captures

Published Jul 20, 2026 · Updated Jul 20, 2026

Stored XSS in Frogman before 1.6.6 allows remote authenticated users to execute JavaScript in another administrator's browser. The formatMarkdown function in assets/js/chat.js inserted user-controlled regex captures into inline-code, bold, link, and download-link HTML without contextual escaping or URL-scheme filtering. Exploitation requires a lower-tier administrator to control a reflected PBX field and a higher-tier administrator to view it in Frogman chat; the script then acts with the viewer's permissions.

CVSS severity4.8
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Frogman before 1.6.6 allows remote authenticated users to execute JavaScript in another administrator's browser. The formatMarkdown function in assets/js/chat.js inserted user-controlled regex captures into inline-code, bold, link, and download-link HTML without contextual escaping or URL-scheme filtering. Exploitation requires a lower-tier administrator to control a reflected PBX field and a higher-tier administrator to view it in Frogman chat; the script then acts with the viewer's permissions.

The record

CVE
CVE-2026-46516
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
mwtcmi
Product
Frogman
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record 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=< 1.6.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

mwtcmi · Frogmanversion=< 1.6.6

Published CVSS scores

4.8GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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