CVE-2023-36632
highpriority · track · 31EPSS 0.016 · 75 %ileDEEUFRRUUSEPSS · scored 2026-10-27
The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger "RecursionError: maximum recursion depth exceeded while calling a Python object" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (25)
Products and version ranges known to be affected.
- Dell PowerProtect Data Domain Management Centerall versionscert_bundDEcpe:/a:dell:powerprotect_data_domain_management_center:-
advisories (8)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-1561Python: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2023-06-25csaf · cert_bundDE
Ein Angreifer kann eine Schwachstelle in Python ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- WID-SEC-W-2024-0885Oracle Database Server: Mehrere SchwachstellenDeutsch2024-04-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Oracle Database Server ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
- WID-SEC-W-2025-0225Dell PowerProtect Data Domain: Mehrere SchwachstellenDeutsch2025-01-30csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell PowerProtect Data Domain ausnutzen, um erhöhte Rechte zu erlangen, einen Denial-of-Service-Zustand herbeizuführen und einen nicht näher spezifizierten Angriff durchzuführen.
- BIT-libpython-2023-366322025-08-11vendor · osvUS
The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger "RecursionError: maximum recursion depth exceeded while calling a Python object" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code.
- BIT-python-2023-366322024-03-06vendor · osvUS
The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger "RecursionError: maximum recursion depth exceeded while calling a Python object" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code.
- BIT-python-min-2023-366322025-01-16vendor · osvUS
The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger "RecursionError: maximum recursion depth exceeded while calling a Python object" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code.
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
- PSF-2023-42023-06-25vendor · osvUS
The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger "RecursionError: maximum recursion depth exceeded while calling a Python object" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code.
also known as (8)
Other names and identifiers for this entity.
- CNNVD-202306-1804cnnvd
- EUVD-2023-40576enisa_euvd
- BDU:2023-04977fstec_bdu
- GHSA-gv66-v8c8-v69cenisa_euvd
- BIT-libpython-2023-36632osv
- BIT-python-2023-36632osv
- BIT-python-min-2023-36632osv
- PSF-2023-4osv
sources
Which sources assert this record, and when.
references (15)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-36632/cnnvd
- https://docs.python.org/3/library/email.htmlcnnvd
- https://docs.python.org/3/library/email.utils.htmlcnnvd
- https://github.com/Daybreak2019/PoC_python3.9_Vul/blob/main/RecursionError-email.utils.parseaddr.pycnnvd
- https://github.com/python/cpython/issues/103800cnnvd
- https://vigilance.fr/vulnerability/Oracle-MySQL-vulnerabilities-of-January-2024-43309cnnvd
- https://www.oracle.com/security-alerts/cpuapr2024.htmlcnnvd
- https://docs.python.org/3/library/email.htmlenisa_euvd
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