CVE-2023-33595
CVE-2023-33595 is a medium-severity vulnerability in Python with a CVSS 3.x base score of 5.5. 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-416.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Python
- Published:
- Last modified:
Description
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
Frequently asked questions
- What is CVE-2023-33595?
- CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- How severe is CVE-2023-33595?
- CVE-2023-33595 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-33595 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-33595?
- CVE-2023-33595 affects Python. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-33595?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-33595 published?
- CVE-2023-33595 was published on 2023-06-07 and last updated on 2026-06-17.
References
- https://github.com/python/cpython/issues/103824
- https://github.com/python/cpython/pull/103993/commits/c120bc2d354ca3d27d0c7a53bf65574ddaabaf3a
Affected products (1)
- cpe:2.3:a:python:python:3.12.0:alpha7:*:*:*:*:*:*
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