CVE-2026-39837

Stored XSS through the dynamic table format in Cargo

MEDIUM
5.4
CVSS Score
Published: April 7, 2026 at 07:47 PM UTC
Updated: July 24, 2026 at 09:20 PM UTC
2 products affected across 2 vendorsCargoCargo

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in WikiWorks Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: before 3.8.7.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 3.8.7
Affected range stops below 3.8.7, so it looks safe — our inference, not a vendor statement
v < 3.8.7
Affected range stops below 3.8.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

ExploitIssue TrackingVendor Advisory
Source: cverecord
https://phabricator.wikimedia.org/T416402

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-80

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