CVE-2026-67196

MEDIUM 5.4

Perspective 5.0.0 XSS via Debug Plugin innerHTML Interpolation

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

Perspective 5.0.0 contains a cross-site scripting vulnerability in the built-in Debug plugin that allows attackers to inject arbitrary HTML and JavaScript by writing table cell values containing unescaped HTML markup, which are interpolated directly into innerHTML during CSV serialization rendering. Attackers can craft table rows with payloads such as unquoted attribute injections containing event handler attributes that bypass RFC 4180 quoting, since angle brackets and event handler attributes are never escaped before assignment, causing malicious scripts to execute in the embedding page's origin.

CWE	CWE-79
Vendor	perspective-dev
Product	perspective
Published	Aug 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

perspective-dev / perspective

0 ≤ 5.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

christbowel.com: https://christbowel.com/blog/perspective-5-0-0-five-cves/ vulncheck.com: https://www.vulncheck.com/advisories/perspective-xss-via-debug-plugin-innerhtml-interpolation

Credits

Christ Bowel Bouchuen