Common Weakness Enumeration

CWE-295

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

CVE-2026-40970 (GCVE-0-2026-40970)

Vulnerability from cvelistv5 – Published: 2026-04-27 19:09 – Updated: 2026-04-27 19:30
VLAI
Summary
When configured to use an SSL bundle, Spring Boot's Elasticsearch auto-configuration does not perform hostname verification when connecting to the Elasticsearch server. Affected: Spring Boot 4.0.0–4.0.5; upgrade to 4.0.6 or later per vendor advisory.
Severity
5 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Spring Spring Boot Affected: 4.0.0 , < 4.0.6 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2026-40971 (GCVE-0-2026-40971)

Vulnerability from cvelistv5 – Published: 2026-04-27 22:45 – Updated: 2026-04-28 12:46
VLAI
Summary
When configured to use an SSL bundle, Spring Boot's RabbitMQ auto-configuration does not perform hostname verification when connecting to the RabbitMQ broker. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14) per vendor advisory.
Severity
5 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Spring Spring Boot Affected: 4.0.0 , < 4.0.6 (custom)
Affected: 3.5.0 , < 3.5.14 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-40974 (GCVE-0-2026-40974)

Vulnerability from cvelistv5 – Published: 2026-04-27 23:31 – Updated: 2026-04-28 12:41
VLAI
Summary
Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); Cassandra SSL auto-configuration. Versions that are no longer supported are also affected per vendor advisory.
Severity
5 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Spring Spring Boot Affected: 4.0.0 , < 4.0.6 (custom)
Affected: 3.5.0 , < 3.5.14 (custom)
Affected: 3.4.0 , < 3.4.16 (custom)
Affected: 3.3.0 , < 3.3.19 (custom)
Affected: 2.7.0 , < 2.7.33 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-40992 (GCVE-0-2026-40992)

Vulnerability from cvelistv5 – Published: 2026-06-11 05:03 – Updated: 2026-06-23 19:46
VLAI
Title
Mail Auto-Configuration Does Not Enable SSL Hostname Verification
Summary
Spring Boot's Mail auto-configuration does not enable hostname verification. Applications that set the relevant JavaMail property, such as spring.mail.properties.mail.smtp.ssl.checkserveridentity=true, are not affected. Affected versions: Spring Boot 4.0.0 through 4.0.6; 3.5.0 through 3.5.14; 3.4.0 through 3.4.16.
Severity
5 (Medium)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Spring Spring Boot Affected: 4.0.0 , < 4.0.6.1 (custom)
Affected: 3.5.0 , < 3.5.14.1 (custom)
Affected: 3.4.0 , < 3.4.17 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41016 (GCVE-0-2026-41016)

Vulnerability from cvelistv5 – Published: 2026-04-30 09:09 – Updated: 2026-04-30 13:17
VLAI
Title
Apache Airflow Providers SMTP: No certificate validation on SMTP STARTTLS connections in SMTP provider
Summary
Apache Airflow's SMTP provider `SmtpHook` called Python's `smtplib.SMTP.starttls()` without an SSL context, so no certificate validation was performed on the TLS upgrade. A man-in-the-middle between the Airflow worker and the SMTP server could present a self-signed certificate, complete the STARTTLS upgrade, and capture the SMTP credentials sent during the subsequent `login()` call. Users are advised to upgrade to the `apache-airflow-providers-smtp` version that contains the fix.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/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-295 - Improper Certificate Validation
Assigner
References
Impacted products
Credits
Francis Bergin (@francisbergin) Jarek Potiuk
Show details on NVD website
To clipboard 

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CVE-2026-41119 (GCVE-0-2026-41119)

Vulnerability from cvelistv5 – Published: 2026-05-18 09:36 – Updated: 2026-05-19 03:55
VLAI
Summary
Dell Live Optics Windows and Personal Edition collectors contain an improper certificate validation vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability leading to loss of confidentiality and integrity.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Dell Live Optics Affected: 0 , < 27.1.10.1 or later (semver)
Create a notification for this product.
Date Public
2026-05-13 18:30
Show details on NVD website
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CVE-2026-41132 (GCVE-0-2026-41132)

Vulnerability from cvelistv5 – Published: 2026-05-13 18:53 – Updated: 2026-05-14 15:42
VLAI
Title
CKAN: No certificate validation on STMP connection
Summary
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in 2.10.10 and 2.11.5.
Severity
6.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
ckan ckan Affected: >= 2.11.0, < 2.11.5
Affected: < 2.10.10
Create a notification for this product.
Show details on NVD website
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CVE-2026-41714 (GCVE-0-2026-41714)

Vulnerability from cvelistv5 – Published: 2026-06-09 23:48 – Updated: 2026-06-10 13:02
VLAI
Title
In Spring AMQP the RabbitConnectionFactoryBean.setUri("amqps://...") bypasses secure SSL setup, uses TrustEverythingTrustManager
Summary
Applications that configure their broker connection via RabbitConnectionFactoryBean.setUri("amqps://...") without also calling setUseSSL(true) get TLS encryption with no certificate validation and no hostname verification. Affected versions: Spring AMQP 4.0.0 through 4.0.3; 3.2.0 through 3.2.10; 3.1.0 through 3.1.15; 2.4.0 through 2.4.17.
Severity
4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Spring Spring AMQP Affected: 4.0.0 , < 4.0.4 (custom)
Affected: 3.2.0 , < 3.2.11 (custom)
Affected: 3.1.0 , < 3.1.16 (custom)
Affected: 2.4.0 , < 2.4.18 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2026-41859 (GCVE-0-2026-41859)

Vulnerability from cvelistv5 – Published: 2026-06-04 01:51 – Updated: 2026-06-04 12:38
VLAI
Summary
A network man-in-the-middle between nats-sync and the BOSH director can steal the director credentials (Basic auth header or UAA client secret) and can tamper with the VM list that is written into the NATS authorization file. Stolen credentials grant administrative director access. UsersSync#bosh_api_response_body builds a Net::HTTP client with verify_mode = OpenSSL::SSL::VERIFY_NONE for every director call (/info, /deployments, /deployments/<name>/vms). Affected versions: - BOSH: all versions prior to v282.1.9 (inclusive); fixed in v282.1.9 or later
Severity
7.1 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:H/SA:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version
Cloud Foundry Foundation BOSH Affected: 0 , < 282.1.9 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2026-41872 (GCVE-0-2026-41872)

Vulnerability from cvelistv5 – Published: 2026-05-12 05:21 – Updated: 2026-05-12 13:17
VLAI
Summary
"Kura Sushi Official App" provided by EPG, Inc. is vulnerable to improper certificate validation. A man-in-the-middle attack may allow eavesdropping on, or altering, the communication on push notifications between the affected application and the relevant server.
Severity
7.4 (High)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper certificate validation
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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Mitigation

Phases: Architecture and Design, Implementation

Description:

  • Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation

Phase: Implementation

Description:

  • If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.

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