CVE-2026-100864
heym before 0.0.91 contains a sandbox escape vulnerability in the expression engine's DotList…
- Risk score
- 63/100
- CVSS
- 8.8 v3.1
- Exploit chance (30 days)
- 0.7%
- Published
- 27 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- heym before 0.0.91 contains a sandbox escape vulnerability in the expression engine's DotList map/filter and fallback resolver that allows authenticated users to execute arbitrary Python code. Attackers can craft workflow expressions using dunder attribute access through item expressions or the fallback resolver to ac…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.0.91 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.8 high
References
Original description
heym before 0.0.91 contains a sandbox escape vulnerability in the expression engine's DotList map/filter and fallback resolver that allows authenticated users to execute arbitrary Python code. Attackers can craft workflow expressions using dunder attribute access through item expressions or the fallback resolver to access os.system and execute commands as the backend process.
Last activity 27 Sep 2026. Patch Forecast updates every hour.