CrewAI: Improper Protection of Alternate Path
CVE-2026-37008 is a high-severity improper protection of alternate path vulnerability in CrewAI, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. The record lists version fb2323b3deb3ec62b3965526857e77a2264e4cd0 as the first without the flaw, so updating CrewAI to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.16% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update CrewAI to fb2323b3deb3ec62b3965526857e77a2264e4cd0 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| CrewAI | CrewAI | before fb2323b3deb3ec62b3965526857e77a2264e4cd0 | fb2323b3deb3ec62b3965526857e77a2264e4cd0 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L. Scored by CNA (mitre.org).
Official description
CrewAI before fb2323b offers a Python blocklist approach that operates at the wrong level of abstraction, a different vulnerability than CVE-2026-2275. Import-time blocking of module names does not address the availability of Python's complete object graph. For example, calling ctypes.CDLL(None) loads the C library without relying in any import statements. In other words, a within-process sandbox cannot merely account for the import system and instead must account for the complete runtime of the Python interpreter.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Protection of Alternate Path
The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources.
How developers prevent this class of flaw
- Deploy different layers of protection to implement security in depth.
More Improper Protection of Alternate Path vulnerabilities (CWE-424)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Other references
Other vulnerabilities in CrewAI
- 9.1 Critical severity
- 8.8 High severity
- 9.8 Critical severity
Recent Improper Protection of Alternate Path vulnerabilities
- 8.2 High severity
- 8.2 High severity
- 9.8 Critical severity
- 8.2 High severity
- 7.8 High severity
- 8.1 High severity
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