CVE-2021-39227
The GitHub Security Advisory page for this vulnerability contains a proof of concept.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
ZRender is a lightweight graphic library providing 2d draw for Apache ECharts. In versions prior to 5.2.1, using `merge` and `clone` helper methods in the `src/core/util.ts` module results in prototype pollution. It affects the popular data visualization library Apache ECharts, which uses and exports these two methods directly. The GitHub Security Advisory page for this vulnerability contains a proof of concept. This issue is patched in ZRender version 5.2.1. One workaround is available: Check if there is `__proto__` in the object keys. Omit it before using it as an parameter in these affected methods. Or in `echarts.util.merge` and `setOption` if project is using ECharts.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.39% probability · 71th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- baidu/zrender
- Source
- security-advisories@github.com
References
- https://github.com/ecomfe/zrender/pull/826Patch, Third Party Advisory
- https://github.com/ecomfe/zrender/releases/tag/5.2.1Release Notes, Third Party Advisory
- https://github.com/ecomfe/zrender/security/advisories/GHSA-fhv8-fx5f-7fxfThird Party Advisory
- https://github.com/ecomfe/zrender/pull/826Patch, Third Party Advisory
- https://github.com/ecomfe/zrender/releases/tag/5.2.1Release Notes, Third Party Advisory
- https://github.com/ecomfe/zrender/security/advisories/GHSA-fhv8-fx5f-7fxfThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.