CVE-2023-33595
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function...
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
CVE-2023-33595- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
CVE List No score
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
CVE-2023-33595- Updated
- 2026-11-02
EUVDEUVD-2023-37751 No score
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
EUVD-2023-37751- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pqc2-g93j-9599
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function...
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
GHSA-pqc2-g93j-9599- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
OSVBELL-CVE-2023-33595
CVE-2023-33595 does not affect BellSoft software
- Record
BELL-CVE-2023-33595- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVBIT-libpython-2023-33595 No score
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
BIT-libpython-2023-33595- Updated
- 2026-11-02
OSVBIT-python-2023-33595 No score
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
BIT-python-2023-33595- Updated
- 2026-11-02
OSVBIT-python-min-2023-33595 No score
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
BIT-python-min-2023-33595- Updated
- 2026-11-02
OSVPSF-2023-3 No score
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
- Record
PSF-2023-3- Weakness
- CWE-416
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libpythonBitnami |
3.12.0-alpha0 up to 3.12.0-alpha8 | 3.12.0-alpha8 |
pythonBitnami |
3.12.0-alpha0 up to 3.12.0-alpha8 | 3.12.0-alpha8 |
python-minBitnami |
3.12.0-alpha0 up to 3.12.0-alpha8 | 3.12.0-alpha8 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-33595 is a medium vulnerability (CVSS 5.5) in Python, published June 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in libpython 3.12.0-alpha8.