CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2021-46823
Medium (6.5) in python-ldap python-ldap. EPSS 1.9% chance of exploitation in the next 30 days. Fixed in python-ldap 3.4.0.
python-ldap before 3.4.0 is vulnerable to a denial of service when ldap.schema is used for untrusted schema definitions, because of a regular expression denial of service (ReDoS) flaw in the LDAP schema parser. By sending crafted regex input, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.
Severity
- EPSS
- 1.9% chance of exploitation in the next 30 days; higher than 80% of CVEs (scores of 2026-10-31)
- CWE
- CWE-1333
- Published
- Modified
- Record from
- the NVD, synced
Affected
- python-ldap:python-ldap
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qfr5-wjpw-q4c4 | PyPI | python-ldap | <3.4.0 | 3.4.0 |
| GHSA-r8wq-qrxc-hmcm | PyPI | python-ldap | <3.4.0 | 3.4.0 |
| PYSEC-2026-912 | PyPI | python-ldap | <3.4.0 | 3.4.0 |