Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2026-56091 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass. This vulnerability is similar to https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module. This issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context. Upgrade to version 3.0.0 or later, which fixes the issue.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://lists.apache.org/thread/onmtxmy2qonbpx7xlw3o34x8sctv47r7 [email protected]AdvisoryMailing ListRemedyVendor

Weakness Enumeration

CWE-IDCWE NameSource
CWE-289Authentication Bypass by Alternate Name[email protected]

Affected Products

ProductVersions
Apache Shiro
<= 2.99.99 (semver)
>= 3.0.0-alpha-0, <= 3.0.0-alpha-1 (semver)

CPE

  • cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*

Remediation

  • Upgrade: 3.0.0moderate effort

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-56091
NVD Published Date:
Jun 25, 2026
NVD Last Modified:
Jun 25, 2026
Source:
[email protected]
CVE-2026-56091 Details - Not Deferred