CVE-2026-15321Public exploitNetwork attack vector

Stored XSS via unsanitized SVG source code

Published Jul 10, 2026 · Updated Jul 10, 2026

Stored XSS in MyEMS 6.0 through 6.4.0 allows remote authenticated users to execute JavaScript in other users' browsers. The SVGCollection.on_post method stores new_values['data']['source_code'] after only presence, type, and nonempty checks, without filtering active SVG content. Administrator access is required to save the payload, which executes when regular or administrative users preview or visit affected views.

CVSS severity2.4
Low
EPSS probability0.39%
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 MyEMS 6.0 through 6.4.0 allows remote authenticated users to execute JavaScript in other users' browsers. The SVGCollection.on_post method stores new_values['data']['source_code'] after only presence, type, and nonempty checks, without filtering active SVG content. Administrator access is required to save the payload, which executes when regular or administrative users preview or visit affected views.

The record

CVE
CVE-2026-15321
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Beijing Haishi Software Co., Ltd.
Product
MyEMS
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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=6.0
  2. Affected versionversion=6.1
  3. Affected versionversion=6.2
  4. Affected versionversion=6.3
  5. Affected versionversion=6.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Beijing Haishi Software Co., Ltd. · MyEMSversion=6.0; version=6.1; version=6.2; version=6.3; version=6.4.0

Published CVSS scores

3.3VulDBAV:N/AC:L/Au:M/C:N/I:P/A:N
1.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
2.4VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
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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