CVE-2026-53693: misp bsimvis · XSS or 'Cross-site Scripting'
Affects misp bsimvisSource CVE Database V5
Not known to be exploited · CVSS 6.9 Medium.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| mispbsimvis | Affected
| Fixed in– |
GitHubbsimvispkg:github/bsimvisOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is released, users should avoid using affected versions (<=0.2.0) or restrict the ability to create or modify tags and metadata to trusted users only to reduce risk.
Description
CVE-2026-53693 is a stored cross-site scripting (XSS) vulnerability in the MISP bsimvis component up to version 0.2.0. The issue arises from improper neutralization of input during web page generation, where tag names, collection names, entity identifiers, cluster names, and tag metadata are injected into HTML, attributes, JavaScript event handlers, and CSS without proper escaping. This allows an attacker who can create or influence stored tag or metadata values to inject malicious JavaScript that executes in other users' browsers when viewing affected pages. The vulnerability has a medium severity with a CVSS score of 6.9. No official patch or remediation is currently indicated.