Common Weakness Enumeration

CWE-90

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component.

CVE-2026-40193 (GCVE-0-2026-40193)

Vulnerability from cvelistv5 – Published: 2026-04-15 23:15 – Updated: 2026-04-16 14:23
VLAI
Title
Maddy Mail Server: LDAP Filter Injection via Unsanitized Username
Summary
maddy is a composable, all-in-one mail server. Versions prior to 0.9.3 contain an LDAP injection vulnerability in the auth.ldap module where user-supplied usernames are interpolated into LDAP search filters and DN strings via strings.ReplaceAll() without any LDAP filter escaping, despite the go-ldap/ldap/v3 library's ldap.EscapeFilter() function being available in the same import. This affects three code paths: the Lookup() filter, the AuthPlain() DN template, and the AuthPlain() filter. An attacker with network access to the SMTP submission or IMAP interface can inject arbitrary LDAP filter expressions through the username field in AUTH PLAIN or LOGIN commands. This enables identity spoofing by manipulating filter results to authenticate as another user, LDAP directory enumeration via wildcard filters, and blind extraction of LDAP attribute values using authentication responses as a boolean oracle or via timing side-channels between the two distinct failure paths. This issue has been fixed in version 0.9.3.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
foxcpp maddy Affected: < 0.9.3
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Show details on NVD website
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CVE-2026-40459 (GCVE-0-2026-40459)

Vulnerability from cvelistv5 – Published: 2026-04-17 13:18 – Updated: 2026-04-17 13:54
VLAI
Title
LDAP Injection in PAC4J
Summary
PAC4J is vulnerable to LDAP Injection in multiple methods. A low-privileged remote attacker can inject crafted LDAP syntax into ID-based search parameters, potentially resulting in unauthorized LDAP queries and arbitrary directory operations. This issue was fixed in PAC4J versions 4.5.10, 5.7.10 and 6.4.1
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
PAC4J PAC4J Affected: 4.0 , < 4.5.10 (semver)
Affected: 5.0 , < 5.7.10 (semver)
Affected: 6.0 , < 6.4.1 (semver)
Create a notification for this product.
Credits
Bartłomiej Dmitruk, striga.ai
Show details on NVD website
To clipboard 

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CVE-2026-40606 (GCVE-0-2026-40606)

Vulnerability from cvelistv5 – Published: 2026-04-21 17:43 – Updated: 2026-04-22 13:26
VLAI
Title
ProxyAuth Addon LDAP Injection in mitmproxy
Summary
mitmproxy is a interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers and mitmweb is a web-based interface for mitmproxy. In mitmproxy 12.2.1 and below, the builtin LDAP proxy authentication does not correctly sanitize the username when querying the LDAP server. This allows a malicious client to bypass authentication. Only mitmproxy instances using the proxyauth option with LDAP are affected. This option is not enabled by default. The vulnerability has been fixed in mitmproxy 12.2.2 and above.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
mitmproxy mitmproxy Affected: < 12.2.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41919 (GCVE-0-2026-41919)

Vulnerability from cvelistv5 – Published: 2026-05-19 09:36 – Updated: 2026-05-19 18:37
VLAI
Title
Apache OFBiz: Authentication Bypass due to Improper Neutralization of LDAP Special Elements in DN Construction
Summary
Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache OFBiz. This issue affects Apache OFBiz: before 24.09.06. Users are recommended to upgrade to version 24.09.06, which fixes the issue.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache OFBiz Affected: 0 , < 24.09.06 (semver)
Create a notification for this product.
Credits
zhaokaifei (China Telecom)
Show details on NVD website
To clipboard 

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CVE-2026-4256 (GCVE-0-2026-4256)

Vulnerability from cvelistv5 – Published: 2026-07-09 13:15 – Updated: 2026-07-09 13:42
VLAI
Title
LDAP Injection in PEAKUP's PassGate
Summary
Improper neutralization of special elements used in an LDAP query ('LDAP injection') vulnerability in PEAKUP Technology Inc. PassGate allows LDAP Injection. This issue affects PassGate: through 30042026.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper neutralization of special elements used in an LDAP query ('LDAP injection')
Assigner
References
Impacted products
Vendor Product Version
PEAKUP Technology Inc. PassGate Affected: 0 , ≤ 30042026 (custom)
Create a notification for this product.
Credits
Eren Can ÖZMEN
Show details on NVD website
To clipboard 

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CVE-2026-42568 (GCVE-0-2026-42568)

Vulnerability from cvelistv5 – Published: 2026-06-10 22:15 – Updated: 2026-06-11 16:14
VLAI
Title
Yamcs Vulnerable to LDAP Injection in LdapAuthModule
Summary
Yamcs is a mission control framework. Prior to versions 5.13.0 and 5.12.7, an LDAP injection vulnerability exists in `org.yamcs.security.LdapAuthModule` when constructing search filters. The username parameter is inserted directly into the LDAP filter without proper RFC 4515 escaping. Versions 5.13.0 and 5.12.7 patch the issue.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
yamcs yamcs Affected: < 5.12.7
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-44063 (GCVE-0-2026-44063)

Vulnerability from cvelistv5 – Published: 2026-05-21 07:34 – Updated: 2026-05-21 12:43
VLAI
Title
LDAP filter injection
Summary
An LDAP injection vulnerability in Netatalk 2.1.0 through 4.4.2 allows a remote authenticated attacker to manipulate LDAP queries and obtain limited information or modify LDAP entries via crafted filter input.
Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
Netatalk Netatalk Affected: 2.1.0 , ≤ 4.4.2 (semver)
Unaffected: 4.5.0 (semver)
Create a notification for this product.
Date Public
2026-05-13 00:00
Credits
Arjun Basnet from Securin
Show details on NVD website
To clipboard 

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CVE-2026-44304 (GCVE-0-2026-44304)

Vulnerability from cvelistv5 – Published: 2026-05-12 21:27 – Updated: 2026-05-14 12:33
VLAI
Title
Lemur: LDAP Filter Injection enables post-authentication privilege escalation
Summary
Lemur manages TLS certificate creation. Prior to 1.9.0, Lemur's LDAP authentication module (lemur/auth/ldap.py) constructs LDAP search filters using unsanitized user input via Python string interpolation. An authenticated LDAP user can inject LDAP filter metacharacters through the username field to manipulate group membership queries and escalate their privileges to administrator. This vulnerability is fixed in 1.9.0.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
Netflix lemur Affected: < 1.9.0
Create a notification for this product.
Show details on NVD website
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CVE-2026-44671 (GCVE-0-2026-44671)

Vulnerability from cvelistv5 – Published: 2026-05-14 21:13 – Updated: 2026-05-15 18:05
VLAI
Title
ZITADEL: LDAP Filter Injection in Login Flow
Summary
ZITADEL is an open source identity management platform. From 2.71.11 to before 3.4.10 and 4.15.0, a vulnerability was discovered in Zitadel's LDAP identity provider implementation, which fails to properly escape user-provided usernames before incorporating them into LDAP search filters. This allows unauthenticated attackers to perform LDAP Filter Injection during the login process. While this vulnerability does not allow for a full authentication bypass, an attacker can use LDAP metacharacters (such as *, (, )) to perform blind LDAP injection. By observing the different failure (or success) responses, an attacker can systematically enumerate valid usernames and extract sensitive attribute data from the connected LDAP directory. This vulnerability is fixed in 3.4.10 and 4.15.0.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
zitadel zitadel Affected: >= 2.71.11, < 3.4.10
Affected: >= 4.0.0, < 4.15.0
Create a notification for this product.
Show details on NVD website
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CVE-2026-44930 (GCVE-0-2026-44930)

Vulnerability from cvelistv5 – Published: 2026-05-22 12:16 – Updated: 2026-06-30 03:18
VLAI
Title
Apache CXF: LDAP Injection vulnerability in XKMS LDAP Repository
Summary
An LDAP injection vulnerability in the LDAP Certificate repository of the XKMS server in Apache CXF may allow an attacker to retrieve arbitrary certificates from the repository.  Users are recommended to upgrade to versions 4.2.1, 4.1.6 or 3.6.11, which fix this issue.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache CXF Affected: 4.2.0 , < 4.2.1 (semver)
Affected: 4.0.0 , < 4.1.6 (semver)
Affected: 0 , < 3.6.11 (semver)
Create a notification for this product.
Red Hat Red Hat build of Apache Camel for Spring Boot 4     cpe:/a:redhat:camel_spring_boot:4
 Create a notification for this product.
Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
 Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
 Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation ID: MIT-5

Phase: Implementation

Strategy: Input Validation

Description:

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
CAPEC-136: LDAP Injection

An attacker manipulates or crafts an LDAP query for the purpose of undermining the security of the target. Some applications use user input to create LDAP queries that are processed by an LDAP server. For example, a user might provide their username during authentication and the username might be inserted in an LDAP query during the authentication process. An attacker could use this input to inject additional commands into an LDAP query that could disclose sensitive information. For example, entering a * in the aforementioned query might return information about all users on the system. This attack is very similar to an SQL injection attack in that it manipulates a query to gather additional information or coerce a particular return value.

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