CVE-2026-53693Network attack vector

Stored XSS via unescaped tag metadata

Published Jun 10, 2026 · Updated Jun 10, 2026

Stored cross-site scripting in BSimVis 0.2.0 and earlier allows remote attackers to execute JavaScript through crafted stored tag metadata. Tag and cluster renderers insert names, identifiers, metadata, event-handler strings, and style values into browser-interpreted contexts without context-appropriate escaping. Attackers must create or influence a stored value that an affected page later renders; execution occurs in the viewing user's session and grants access to data and actions available there.

CVSS severity6.9
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored cross-site scripting in BSimVis 0.2.0 and earlier allows remote attackers to execute JavaScript through crafted stored tag metadata. Tag and cluster renderers insert names, identifiers, metadata, event-handler strings, and style values into browser-interpreted contexts without context-appropriate escaping. Attackers must create or influence a stored value that an affected page later renders; execution occurs in the viewing user's session and grants access to data and actions available there.

The record

CVE
CVE-2026-53693
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
MISP
Product
BSimVis
Classifications
CWE-79, CWE-116, CAPEC-592, CAPEC-63, CAPEC-243, CAPEC-18, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 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=0 <=v0.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MISP · BSimVisversion=0 <=v0.2.0

Published CVSS scores

6.9CIRCLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-116Improper Encoding or Escaping of Output
CAPEC-592Stored XSS
CAPEC-63Cross-Site Scripting (XSS)
CAPEC-243XSS Targeting HTML Attributes
CAPEC-18XSS Targeting Non-Script Elements
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo