CVE-2026-76909
📛 CVE Title
Unleash: CR-approval email renders user-controlled raw HTML
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.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- GitHub_M
- CVSS severity
- LOW
- CVSS score
- 2.1 / 10
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N- Effective score
- 2.1 / 10 LOW source: CNA overview
- CWE(s)
-
CWE-79 - Reserved
- 2026-08-19
- Published
- 2026-09-22 20:18 UTC
- Last updated
- 2026-09-22 20:18 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/76xxx/CVE-2026-76909.json
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-22 21:17:31 UTC
- NVD last modified
- 2026-09-22 21:17:31 UTC
NVD / KEV / EPSS data refreshed 2026-09-23 02:42 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-84824 - Assigner
- GitHub_M
- Published
- Sep 22, 2026, 8:18:25 PM
- Updated
- Sep 22, 2026, 8:18:25 PM
- EUVD base score (CVSS 4.0)
-
2.1 / 10
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - EUVD-reported EPSS
- 0.0000
- Vendors
- Unleash
- Products
-
unleash (< 8.0.3)
- Aliases
-
GHSA-7hvx-28gp-mf6j
ENISA 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 products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Unleash | unleash |
< 8.0.3 (affected)
|
— |
Vendor references (3)
References embedded in the original CVE record by the assigning CNA.
- https://github.com/Unleash/unleash/security/advisories/GHSA-7hvx-28gp-mf6j x_refsource_CONFIRM
- https://github.com/Unleash/unleash/commit/7c89cedcbbb5aa826951373569930e0a3c4358db x_refsource_MISC
- https://github.com/Unleash/unleash/releases/tag/v8.0.3 x_refsource_MISC
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://github.com/Unleash/unleash/commit/7c89cedcbbb5aa826951373569930e0a3c4358db security-advisories@github.com
- https://github.com/Unleash/unleash/releases/tag/v8.0.3 security-advisories@github.com
- https://github.com/Unleash/unleash/security/advisories/GHSA-7hvx-28gp-mf6j security-advisories@github.com
Remediations (10)
-
web:helpx.adobe.com
This page contains important information regarding security vulnerabilities that could affect specific versions of Adobe products. Use this information to take the prescribed corrective actions.
2026-09-23 15:44 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-09-23 15:44 UTC -
web:msrc.microsoft.com
Security Update Guide - Microsoft Security Response Center
2026-09-23 15:44 UTC -
web:sec.cloudapps.cisco.com
On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...
2026-09-23 15:44 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-09-23 15:44 UTC -
web:support.microsoft.com
Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?) How to get and install the update Method 1: Microsoft Update This update is available from Microsoft Update. When you turn on ...
2026-09-23 15:44 UTC -
web:support.microsoft.com
This out-of-band (OOB) update for Windows 11, version 25H2 and Windows 11, version 24H2 (KB5121768) is cumulative. It includes all improvements from previous security and non-security updates, along with an additional fix . Improvements This OOB update includes the following improvement: [System Performance] This update addresses an issue affecting a limited number of devices with an Intel ...
2026-09-23 15:44 UTC -
web:www.dell.com
Dell Command | Update remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise affected systems.
2026-09-23 15:44 UTC -
web:www.rapid7.com
CVE-2026-76909 : unleash: Unleash is an open-source feature management platform. View severity, references, and remediation details from Rapid7.
2026-09-23 15:44 UTC -
web:www.veeam.com
When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line with our dedication to transparency, we publicly disclose the vulnerability and provide detailed mitigation information.
2026-09-23 15:44 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-76909.json.
{
"containers": {
"cna": {
"affected": [
{
"product": "unleash",
"vendor": "Unleash",
"versions": [
{
"status": "affected",
"version": "< 8.0.3"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-22T20:18:25.219Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/Unleash/unleash/security/advisories/GHSA-7hvx-28gp-mf6j",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/Unleash/unleash/security/advisories/GHSA-7hvx-28gp-mf6j"
},
{
"name": "https://github.com/Unleash/unleash/commit/7c89cedcbbb5aa826951373569930e0a3c4358db",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/Unleash/unleash/commit/7c89cedcbbb5aa826951373569930e0a3c4358db"
},
{
"name": "https://github.com/Unleash/unleash/releases/tag/v8.0.3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/Unleash/unleash/releases/tag/v8.0.3"
}
],
"source": {
"advisory": "GHSA-7hvx-28gp-mf6j",
"discovery": "UNKNOWN"
},
"title": "Unleash: CR-approval email renders user-controlled raw HTML"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-76909",
"datePublished": "2026-09-22T20:18:25.219Z",
"dateReserved": "2026-08-19T22:43:14.891Z",
"dateUpdated": "2026-09-22T20:18:25.219Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}