What’s Vulnerable › Vulnerabilities

CVE-2026-61696: Forem: Stored XSS in Admin Abuse Report Rendering

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-18 · updated 2026-09-18
• Weakness: CWE-74

Description

Forem is open source software for building communities. In versions before commit 92eacd16a82cf9007ba8e16a2258b42e3b53ca9c, a malicious value submitted through feedback_message[message] is stored without sanitization and rendered in app/views/admin/feedback_messages/_feedback_message.html.erb through raw(feedback_message.message) when offender_id is present. Viewing the abuse report executes arbitrary JavaScript in an administrator's browser and may expose sensitive in-page data, abuse CSRF tokens, or perform administrative actions in the victim's session. The public FeedbackMessagesController accepts the report without authorization and previously permitted a submitted offender_id, making the vulnerable rendering path reachable by an unauthenticated attacker. This issue is fixed in commit 92eacd16a82cf9007ba8e16a2258b42e3b53ca9c

Affected products

• forem: before 92eacd16a82cf9007ba8e16a2258b42e3b53ca9c

References

• https://github.com/forem/forem/commit/92eacd16a82cf9007ba8e16a2258b42e3b53ca9c
• https://github.com/forem/forem/security/advisories/GHSA-4463-499m-94mx

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