Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
GHSA-p34h-wq7j-h5v6 affects python-ldap versions before 3.4.5. The ldap.dn.escape_dn_chars() helper escapes a NUL character as a backslash followed by a literal NUL byte instead of the hex form \00, so applications that build DNs from untrusted input with it can fail client-side before any request is sent. An attacker who can supply such input to an affected application can cause a denial of service; the source does not describe other impacts. Upgrade to python-ldap 3.4.5, which contains the fix.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.5 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0046, the 39th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:34 UTC First seen by agentprime
- 31 Oct 2026, 14:34 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-p34h-wq7j-h5v6
- OSV: GHSA-p34h-wq7j-h5v6
- github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6
- nvd.nist.gov/vuln/detail/CVE-2025-61912
- github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f
- github.com/python-ldap/python-ldap
- github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5