CVE-2026-55690Public exploitNetwork attack vector

Stored XSS via unescaped service name exception

Published Sep 15, 2026 · Updated Sep 15, 2026

Stored XSS in Star Citizen Wiki EmbedVideo 4.0.0 and earlier allows remote attackers to execute JavaScript through editable wiki pages. EmbedServiceFactory::newFromName inserts an unrecognized service name into exception text, and EmbedVideo returns that text as HTML without neutralization. Edit access is required to store the payload; it then runs in the wiki origin for each visitor who renders the page.

CVSS severity7.5
High
EPSS probability0.29%
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 Star Citizen Wiki EmbedVideo 4.0.0 and earlier allows remote attackers to execute JavaScript through editable wiki pages. EmbedServiceFactory::newFromName inserts an unrecognized service name into exception text, and EmbedVideo returns that text as HTML without neutralization. Edit access is required to store the payload; it then runs in the wiki origin for each visitor who renders the page.

The record

CVE
CVE-2026-55690
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Star Citizen Wiki
Product
EmbedVideo
Classifications
CWE-79, CWE-80, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=< 4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Star Citizen Wiki · EmbedVideoversion=< 4.1.0

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
T1059.007Command and Scripting Interpreter: JavaScript

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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