CVE-2026-34951: Reflected XSS in footer.php in Workbench Allows Attackers to Hijack Authenticated Sessions

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-06 · updated 2026-10-24
Weakness: CWE-79

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.

Affected products

Salesforce Workbench: before 65.0.0 — fixed in 65.0.0

How to fix

Upgrade to a fixed version: Salesforce Workbench 65.0.0. Check the vendor advisory for mitigations.

References

https://github.com/forceworkbench/forceworkbench/security/advisories/GHSA-j94x-h584-rjf9

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