CVE-2026-37008
CVE-2026-37008 is a high-severity vulnerability with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-424.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- EPSS exploit prediction: 0% (5th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-424
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-37008?
- 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.
- How severe is CVE-2026-37008?
- CVE-2026-37008 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
- Is CVE-2026-37008 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-37008?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-37008 published?
- CVE-2026-37008 was published on 2026-09-13 and last updated on 2026-09-22.
References
- https://docs.python.org/3/library/ctypes.html
- https://github.com/crewAIInc/crewAI/commit/fb2323b3deb3ec62b3965526857e77a2264e4cd0
- https://yerangamage.com/cves/detail/?slug=crewai-sandbox-escape
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