# CVE-2020-1957: Improper Authentication in Apache Shiro

Source: https://junglewise.ai/threats/cve-2020-1957-improper-authentication-in-apache-shiro  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-05-07  
License: CC BY 4.0 with a link back

CVE-2020-1957 · Severity: low · CVSS 3.1 · Published 2021-05-07

Improper Authentication in Apache Shiro

Technologies: [org.apache.shiro:shiro-core (Maven)](https://junglewise.ai/threats/technologies/org-apache-shiro-shiro-core). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2020-1957 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-1957 being exploited in the wild.

**How severe is CVE-2020-1957?** Low severity, with a CVSS score of 3.1, published 7 May 2021.

**Which products and versions are affected?** org.apache.shiro:shiro-core (Maven) ECOSYSTEM:introduced=0,fixed=1.5.2.

**Is there a fix for CVE-2020-1957?** Yes. org.apache.shiro:shiro-core (Maven): upgrade to 1.5.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-1957?** Check whether you run org.apache.shiro:shiro-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.apache.shiro:shiro-core (Maven): upgrade to 1.5.2 or later

  ```sh
  # set org.apache.shiro:shiro-core to 1.5.2 in your pom.xml or build.gradle
  ```


## Affected products

- org.apache.shiro:shiro-core (Maven) ECOSYSTEM:introduced=0,fixed=1.5.2

## Identifiers

- CVE-2020-1957
- GHSA-26gr-cvq3-qxgf

## Related threats

- [Apache Shiro authentication bypass via RememberMe cookie replay](https://junglewise.ai/threats/cve-2026-56130-apache-shiro-authentication-bypass-via-rememberme-cookie-replay)
- [Apache Shiro LDAP injection in DefaultLdapRealm](https://junglewise.ai/threats/cve-2026-49268-apache-shiro-ldap-injection-in-defaultldaprealm)
- [Apache Shiro session fixation in default configuration](https://junglewise.ai/threats/cve-2026-43827-apache-shiro-session-fixation-in-default-configuration)
- [Apache Shiro Affected by an Observable Timing Discrepancy Vulnerability](https://junglewise.ai/threats/cve-2026-23901-apache-shiro-affected-by-an-observable-timing-discrepancy)
- [Apache Shiro vulnerable to path traversal](https://junglewise.ai/threats/cve-2023-46749-apache-shiro-vulnerable-to-path-traversal)