---
title: "CVE-2021-41303: Apache Shiro before 1.8.0, when using… | CubePath"
description: "Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-41303
---

# CVE-2021-41303: Apache Shiro before 1.8.0, when using… | CubePath

## Description

Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0.

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-41303)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.76130 (76.1% probability)

Percentile

99.5%

Scores of

Nov 10, 2026

Model

v2026.06.15

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-287](https://cwe.mitre.org/data/definitions/287.html) Improper Authentication

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apache Shiro

  - affected: Apache Shiro up to before 1.8.0

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [lists.apache.org/thread.html/re470be1ffea44bca28ccb0e67a4cf…](https://lists.apache.org/thread.html/re470be1ffea44bca28ccb0e67a4cf5d744e2d2b981d00fdbbf5abc13%40%3Cannounce.shiro.apache.org%3E)
- [\[shiro-user\] 20210929 Re: CVE-2021-41303: Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass](https://lists.apache.org/thread.html/raae98bb934e4bde304465896ea02d9798e257e486d04a42221e2c41b%40%3Cuser.shiro.apache.org%3E)  (lists.apache.org) mailing-list
- [oracle.com/security-alerts/cpujul2022.html](https://www.oracle.com/security-alerts/cpujul2022.html)
- [security.netapp.com/advisory/ntap-20220609-0001](https://security.netapp.com/advisory/ntap-20220609-0001/)

## Timeline

1. ID reserved Sep 16, 2021
2. Record published Sep 17, 2021
3. Record last updated Aug 4, 2024

## Look up another CVE

## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:02 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)