Common Weakness Enumeration

CWE-90

Allowed

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

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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.

167 vulnerabilities reference this CWE, most recent first.

CVE-2026-75020 (GCVE-0-2026-75020)

Vulnerability from cvelistv5 – Published: 2026-08-27 09:14 – Updated: 2026-08-27 12:09
VLAI
Title
Apache APISIX: ldap-auth plugin cross-subtree identity impersonation
Summary
Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache APISIX. A caller who holds valid credentials for one entry in the LDAP directory can authenticate through APISIX as a consumer mapped to a different entry, one the plugin's configured scope was meant to keep out of reach. This issue affects Apache APISIX: from 2.11.0 through 3.17.0. Users are recommended to upgrade to version 3.18.0, which fixes the issue.
Severity
7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 12:09 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 939 records in the last 180 days details
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache APISIX Affected: 2.11.0 , ≤ 3.17.0 (semver)
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Credits
MopMonk AI
Show details on NVD website
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CVE-2026-74241 (GCVE-0-2026-74241)

Vulnerability from cvelistv5 – Published: 2026-08-14 22:43 – Updated: 2026-08-17 15:51
VLAI
Title
Quay: ldap referral filter injection in quay external ldap authentication
Summary
A flaw was found in Red Hat Quay's external Lightweight Directory Access Protocol (LDAP) authentication handling. When an LDAP referral is returned during authentication, the system does not properly escape the username input. This allows an attacker to inject LDAP filter metacharacters, enabling user-existence oracle attacks at the referral Directory Name (DN). This could also potentially influence which DN is used for password binding in multi-domain Active Directory environments.
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 15:51 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1025 records in the last 180 days details
References
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https://access.redhat.com/security/cve/CVE-2026-74241 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2516141 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat OpenShift Update Service     cpe:/a:redhat:openshift_update_service:5
Create a notification for this product.
Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
Create a notification for this product.
Date Public
2026-08-14 00:00
Credits
Red Hat would like to thank meifukun (https://github.com/meifukun) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-67223 (GCVE-0-2026-67223)

Vulnerability from cvelistv5 – Published: 2026-09-25 16:15 – Updated: 2026-09-25 17:51
VLAI
Title
RabbitMQ: LDAP DN injection via unescaped substitution
Summary
RabbitMQ is a messaging and streaming broker. The advisory establishes affected 3.13, 4.0, 4.1, 4.2, and 4.3 maintenance lines but contains conflicting first-fixed versions for the 3.13, 4.0, and 4.1 lines. fill/2 substitutes ${username} into user_dn_pattern without RFC 4514 DN escaping, allowing a crafted username to alter the LDAP bind DN and potentially select a different directory entry. Exploitation requires rabbitmq_auth_backend_ldap with a user_dn_pattern containing ${username}, a directory layout in which the injected suffix resolves usefully, and a password valid for the resulting DN. The advisory body identifies 3.13.15, 4.0.20, 4.1.11, 4.2.9, and 4.3.3 as fixed, while structured metadata identifies 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3. No fixed-version assertion is certifiable until a curator resolves this conflict.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 17:50 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7712 records in the last 180 days details
References
Impacted products
Vendor Product Version
rabbitmq rabbitmq-server Affected: >= 3.13.0, < 3.13.18
Affected: >= 4.0.0, < 4.0.23
Affected: >= 4.1.0, < 4.1.14
Affected: >= 4.2.0, < 4.2.9
Affected: >= 4.3.0, < 4.3.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-59652 (GCVE-0-2026-59652)

Vulnerability from cvelistv5 – Published: 2026-08-03 00:39 – Updated: 2026-08-03 13:30
VLAI
Title
LDAP filter injection in legacy jdk1.4 LDAPStoreHelper
Summary
In Bouncy Castle for Java before 1.85, LDAP filter injection in legacy jdk1.4 LDAPStoreHelper.
Severity
6.9 (Medium)
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/U:Amber
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 13:30 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
bcorg CNA under the mitre root
CNA scorecard B 84/100 over 74 records in the last 180 days details
References
Impacted products
Vendor Product Version
Legion of the Bouncy Castle Inc. BC-JAVA Affected: 0 , < 1.85 (maven)
Create a notification for this product.
Credits
Alex Gaynor in collaboration with Claude and Anthropic Research
Show details on NVD website
To clipboard 

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CVE-2026-58222 (GCVE-0-2026-58222)

Vulnerability from cvelistv5 – Published: 2026-07-30 15:11 – Updated: 2026-07-30 16:12
VLAI
Title
Samba: samba ad ldap compare filter injection and trusted-request confusion disclose protected attributes
Summary
A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the "msKds-RootKeyData" attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 16:12 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1025 records in the last 180 days details
References
Impacted products
Date Public
2026-07-28 10:00
Credits
Red Hat would like to thank Andrew Tridgell (Samba Team), Bin Luo (University of Electronic Science and Technology of China (UESTC)), OpenAI Security Research, and Tristan Madani (Talence Security) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-55770 (GCVE-0-2026-55770)

Vulnerability from cvelistv5 – Published: 2026-09-15 15:44 – Updated: 2026-09-17 11:59
VLAI
Title
OpenBao: LDAPi ldaputil (wrong escape func)
Summary
OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, OpenBao used EscapeLDAPValue, an RFC 4514 distinguished-name escaping function, where RFC 4515 LDAP search-filter escaping was required in sdk/helper/ldaputil/client.go GetUserDN. With the LDAP authentication backend configured for an Active Directory UPNDomain path or UserDN and UserAttr binding, an attacker-controlled username containing filter metacharacters could alter the search predicate and select a different directory entry because EscapeLDAPValue does not neutralize the characters handled by ldap.EscapeFilter. A resulting token could be associated with another LDAP identity and gain access to secrets, policies, or modification capabilities assigned to that identity. This issue is fixed in version 2.5.5.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 03:56 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7712 records in the last 180 days details
References
Impacted products
Vendor Product Version
openbao openbao Affected: < 2.5.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-53658 (GCVE-0-2026-53658)

Vulnerability from cvelistv5 – Published: 2026-09-15 16:37 – Updated: 2026-09-16 15:37
VLAI
Title
Fabric CA: LDAP Injection via Unescaped Username in GetUser Filter
Summary
Fabric CA is a Certificate Authority for Hyperledger Fabric. Prior to 1.5.21, when fabric-ca is configured with an LDAP backend, Client.GetUser in lib/server/ldap/client.go inserts the username from HTTP Basic authentication into the LDAP uid search UserFilter without escaping LDAP metacharacters. An unauthenticated attacker with network access to the CA enrollment endpoint can alter the LDAP search before password validation and potentially steer authentication attempts toward a victim account. Deployments that do not use an LDAP backend are unaffected. This issue is fixed in version 1.5.21.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 15:37 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7712 records in the last 180 days details
References
Impacted products
Vendor Product Version
hyperledger fabric-ca Affected: < 1.5.21
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-49469 (GCVE-0-2026-49469)

Vulnerability from cvelistv5 – Published: 2026-09-25 18:25 – Updated: 2026-09-29 18:00
VLAI
Title
GLPI: LDAP filter injection in user import feature
Summary
GLPI is a free asset and IT management software package. From 0.70 until 10.0.26 and 11.0.8, an authenticated hotliner or technician can submit crafted criteria through the user import feature to bypass the configured default LDAP filter. This allows access to LDAP objects that the default filter was intended to exclude. This issue is fixed in versions 11.0.8 and 10.0.26.
Severity
4.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 18:00 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7712 records in the last 180 days details
References
Impacted products
Vendor Product Version
glpi-project glpi Affected: >= 0.70, < 10.0.26
Affected: >= 11.0.0, < 11.0.8
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-49268 (GCVE-0-2026-49268)

Vulnerability from cvelistv5 – Published: 2026-06-17 13:07 – Updated: 2026-06-17 17:02
VLAI
Title
Apache Shiro: LDAP DN Injection in DefaultLdapRealm
Summary
A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input is directly concatenated into the LDAP DN template without any escaping of RFC 2253 special characters. This allows an attacker to manipulate the DN structure used for LDAP bind authentication, potentially bypassing authentication or impersonating other users. This issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when using DefaultLdapRealm Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/R:A/RE:L/U:Red
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:02 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 939 records in the last 180 days details
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Shiro Affected: 0 , ≤ 2.2.0 (semver)
Affected: 3.0.0-alpha-0 , ≤ 3.0.0-alpha-1 (semver)
Create a notification for this product.
Credits
zhaokaifei (reporter) - ChinaTelecom Lenny Primak <lenny@flowlogix.com>
Show details on NVD website
To clipboard 

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CVE-2026-47303 (GCVE-0-2026-47303)

Vulnerability from cvelistv5 – Published: 2026-07-14 18:45 – Updated: 2026-10-08 18:12
VLAI
Title
ASP.NET Core Elevation of Privilege Vulnerability
Summary
Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 00:00 UTC
CWE
  • CWE-302 - Authentication Bypass by Assumed-Immutable Data
  • CWE-863 - Incorrect Authorization
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
microsoft CNA under the mitre root
CNA scorecard B 82/100 over 3955 records in the last 180 days details
References
Impacted products
Date Public
2026-07-14 14:00
Show details on NVD website
To clipboard 

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      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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      "descriptions": [
        {
          "lang": "en-US",
          "value": "Authentication bypass by assumed-immutable data in ASP.NET Core allows an authorized attacker to elevate privileges over a network."
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              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en-US",
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            {
              "cweId": "CWE-90",
              "description": "CWE-90: Improper Neutralization of Special Elements used in an LDAP Query (\u0027LDAP Injection\u0027)",
              "lang": "en-US",
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      "title": "ASP.NET Core Elevation of Privilege Vulnerability"
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Mitigation MIT-5
Implementation

Strategy: Input Validation

  • 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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