CVE-2026-76909

Unleash: CR-approval email renders user-controlled raw HTML

LOW
2.1
CVSS Score
Published: September 22, 2026 at 08:18 PM UTC
Updated: September 23, 2026 at 06:30 PM UTC
1 product affected across 1 vendorUnleash

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Severity
LOW2.1
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Unleash is an open-source feature management platform. Prior to 8.0.3, the change-request approval email template at src/mailtemplates/requested-cr-approval/requested-cr-approval.html.mustache renders the user-controlled changeRequestTitle, requesterName, and requesterEmail values without HTML escaping, and sendRequestedCRApprovalEmail passes those values to Mustache rendering. A project member who can create a change request when approval emails are enabled can inject HTML into an approver's notification, allowing forged links, tracking content, or visually altered email content. This issue is fixed in version 8.0.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.0.3
Affected range stops below 8.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.1LOWGitHub_M
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79

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