---
title: "CVE-2020-5397\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2020-5397?format=md
keywords: index, follow
---

# CVE-2020-5397

Publication date 17 January 2020

Last updated 11 July 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2020-5397?format=md#impact-score)

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## Description

Spring Framework, versions 5.2.x prior to 5.2.3 are vulnerable to CSRF
attacks through CORS preflight requests that target Spring MVC
(spring-webmvc module) or Spring WebFlux (spring-webflux module) endpoints.
Only non-authenticated endpoints are vulnerable because preflight requests
should not include credentials and therefore requests should fail
authentication. However a notable exception to this are Chrome based
browsers when using client certificates for authentication since Chrome
sends TLS client certificates in CORS preflight requests in violation of
spec requirements. No HTTP body can be sent or received as a result of this
attack.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libspring-java | 26.04 LTS resolute | Needs evaluation |
| 25.10 questing | Ignored end of life, was needs-triage |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 23.10 mantic | Ignored end of life, was needs-triage |
| 23.04 lunar | Ignored end of life, was needs-triage |
| 22.10 kinetic | Ignored end of life, was needs-triage |
| 22.04 LTS jammy | Needs evaluation |
| 21.10 impish | Ignored end of life |
| 21.04 hirsute | Ignored end of life |
| 20.10 groovy | Ignored end of life |
| 20.04 LTS focal | Needs evaluation |
| 19.10 eoan | Ignored end of life |
| 19.04 disco | Ignored end of life |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5397)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-5397)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-5397)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-5397)

### Other references

* <https://pivotal.io/security/cve-2020-5397>
* <https://www.cve.org/CVERecord?id=CVE-2020-5397>