PatchTheCVECVE-2026-32640: SimpleEval is a library for adding evaluatable expressions into python projects
CVE-2026-32640 is a critical-severity flaw (CVSS 9.8) affecting simpleeval. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
SimpleEval is a library for adding evaluatable expressions into python projects. Prior to 1.0.5, objects (including modules) can leak dangerous modules through to direct access inside the sandbox. If the objects you've passed in as names to SimpleEval have modules or other disallowed / dangerous objects available as attrs. Additionally, dangerous functions or modules could be accessed by passing them as callbacks to other safe functions to call.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-07-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-32640?
simpleeval: upgrade to 1.0.5. Exact commands for each OS are on this page.
Is CVE-2026-32640 being exploited?
CVE-2026-32640 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-32640 affect?
CVE-2026-32640 affects simpleeval. Severity is critical (CVSS 9.8). SimpleEval is a library for adding evaluatable expressions into python projects. Prior to 1.0.5, objects (including modules) can leak dangerous modules through to direct access inside the sandbox. If the objects you've passed in as names to
How urgent is CVE-2026-32640?
Priority 50/100. Critical severity; Remotely exploitable, no login, no user action