Improperly Controlled Modification of Dynamically-Determined Object Attributes Affecting simpleeval package, versions [,1.0.5)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Mar 2026
- disclosed13 Mar 2026
- creditByambadalai Sumiya
Introduced: 13 Mar 2026
NewCVE-2026-32640 (opens in a new tab)How to fix?
Upgrade simpleeval to version 1.0.5 or higher.
Overview
simpleeval is an A simple, safe single expression evaluator library.
Affected versions of this package are vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes in the evaluation when objects passed as names contain modules or other disallowed objects as attributes. An attacker can execute arbitrary code by accessing dangerous modules or functions through attribute chains or by passing them as callbacks to otherwise safe functions.
Workaround
This vulnerability can be mitigated by not passing objects or modules with direct attributes to potentially dangerous items, or by using a wrapper to restrict access to such attributes.