CVE-2026-57783Network attack vector

Authenticated stored script execution

Published Jul 13, 2026 · Updated Jul 13, 2026

Stored cross-site scripting in Merkulove Speaker 4.1.13 and earlier allows remote authenticated users to execute scripts in visitors' browsers. Patchstack has not disclosed the affected field, request handler, or code path that stores untrusted input without safe output encoding. Low-privileged access and a visitor loading the stored content are required, after which the script runs in that visitor's browser.

CVSS severity6.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Merkulove Speaker 4.1.13 and earlier allows remote authenticated users to execute scripts in visitors' browsers. Patchstack has not disclosed the affected field, request handler, or code path that stores untrusted input without safe output encoding. Low-privileged access and a visitor loading the stored content are required, after which the script runs in that visitor's browser.

The record

CVE
CVE-2026-57783
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
Merkulove
Product
Speaker
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=4.1.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Merkulove · Speakerversion=0 <=4.1.13

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter: JavaScript

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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