CVE-2026-34951 Reflected XSS in footer.php in Workbench Allows Attackers to Hijack Authenticated Sessions
Attackers can execute arbitrary scripts in victims' browsers via reflected XSS in Workbench, potentially hijacking authenticated sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-34951?
CVE-2026-34951 is a medium-severity cross-site scripting vulnerability in forceworkbench, published on 6 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Workbench is a suite of tools for administrators and developers to interact with Salesforce.com organizations via the Force.com APIs. Prior to 65.0.0, Workbench contains a reflected cross-site scripting vulnerability via the footerScripts parameter, which does not sanitize user-supplied input before rendering it in the page response. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Workbench allows XSS Targeting Error Pages. This vulnerability is fixed in 65.0.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-34951?
It affects 1 product.
Products include Salesforce Workbench.
How do I fix CVE-2026-34951?
No fix has been published for CVE-2026-34951 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-2026-34951 being exploited?
There is no known exploitation of CVE-2026-34951 in the wild and no public exploit code.
Sources
Also known as GHSA-j94x-h584-rjf9.