CVE-2025-61911Public exploitNetwork attack vector

LDAP injection via non-string filter value escaping

Published Oct 10, 2025 · Updated Oct 14, 2025

LDAP injection in python-ldap before 3.4.5 allows remote attackers to read or manipulate directory data through crafted filter values. The ldap.filter.escape_filter_chars function iterates non-string list or dictionary values under escape_mode=1 and returns their special characters without LDAP filter escaping. Exploitation requires a consuming application to pass attacker-controlled structured input to this non-default mode; the resulting filter can expose or modify otherwise inaccessible LDAP data.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LDAP injection in python-ldap before 3.4.5 allows remote attackers to read or manipulate directory data through crafted filter values. The ldap.filter.escape_filter_chars function iterates non-string list or dictionary values under escape_mode=1 and returns their special characters without LDAP filter escaping. Exploitation requires a consuming application to pass attacker-controlled structured input to this non-default mode; the resulting filter can expose or modify otherwise inaccessible LDAP data.

The record

CVE
CVE-2025-61911
Published
Oct 10, 2025
Updated
Oct 14, 2025
Vendor
python-ldap project
Product
python-ldap
Classifications
CWE-75, CWE-843
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

python-ldap project · python-ldapversion=< 3.4.5

Published CVSS scores

5.5GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-75Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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