CVE-2020-5407
Signature Wrapping Vulnerability with spring-security-saml2-service-provider
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
- Record
CVE-2020-5407- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-347
- Updated
- 2026-11-02
CVE List No score
Signature Wrapping Vulnerability with spring-security-saml2-service-provider
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
- Record
CVE-2020-5407- Weakness
- CWE-347
- Updated
- 2026-11-02
EUVDEUVD-2020-0457 No score
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
- Record
EUVD-2020-0457- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-48rw-j489-928m
Signature wrapping vulnerability in Spring Security
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
- Record
GHSA-48rw-j489-928m- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-347
- Updated
- 2026-11-02
OSVGHSA-48rw-j489-928m
Signature wrapping vulnerability in Spring Security
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
- Record
GHSA-48rw-j489-928m- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-347
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.springframework.security:spring-security-coreMaven |
5.2.0 up to 5.2.4 | 5.2.4 |
org.springframework.security:spring-security-coreMaven |
5.3.0 up to 5.3.2 | 5.3.2 |
org.springframework.security:spring-security-coreMaven |
5.2.0 up to 5.2.4, plus listed versions 5.2.0.RELEASE5.2.1.RELEASE5.2.2.RELEASE5.2.3.RELEASE |
5.2.4 |
org.springframework.security:spring-security-coreMaven |
5.3.0 up to 5.3.2, plus listed versions 5.3.0.RELEASE5.3.1.RELEASE |
5.3.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-5407 is a high vulnerability (CVSS 8.8) in Pivotal Software Spring Security, published May 13, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.20%, the 68th percentile. Fixed in org.springframework.security:spring-security-core 5.2.4.
References
lists.apache.org/thread.html/r73af928cf64bebf78b7fa4bc56a5253273ec7829f5f5827f64c72fc7%40%3Cissues.servicemix.apache.org%3E
oracle.com/security-alerts/cpuoct2020.html
tanzu.vmware.com/security/cve-2020-5407
Show 6 moreShow less
nvd.nist.gov/vuln/detail/CVE-2020-5407
github.com/advisories/GHSA-48rw-j489-928m