CVE-2026-67196 Perspective 5.0.0 XSS via Debug Plugin innerHTML Interpolation
Attackers can execute arbitrary JavaScript in the embedding page's origin by injecting unescaped HTML into table cells rendered by the Debug plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-67196?
CVE-2026-67196 is a medium-severity cross-site scripting vulnerability in perspective-dev perspective, published on 4 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-67196?
How do I fix CVE-2026-67196?
No fix has been published for CVE-2026-67196 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-67196 being exploited?
There is no known exploitation of CVE-2026-67196 in the wild and no public exploit code.
Sources
Also known as GHSA-4hrp-pjm9-fv3q.