Security readout for executives and security teams
Plain-English summary
A crafted web request may bypass authentication in Spring Boot applications using Apache Shiro before 1.8.0. The named vendor fix is updating Shiro to 1.8.0. Business urgency depends on whether Shiro protects public-facing or sensitive application routes.
Executive priority
Prioritize remediation for public-facing Spring Boot applications using Shiro, because authentication bypass can expose sensitive functions. If Shiro is absent or already at 1.8.0 or later, residual urgency is lower.
Technical view
CVE-2021-41303 is a CWE-287 authentication bypass affecting Apache Shiro before 1.8.0 when used with Spring Boot. The source bundle does not provide CVSS details, route-matching specifics, or exploit mechanics, only that a specially crafted HTTP request may bypass authentication.
Likely exposure
Exposure is likely limited to applications using Apache Shiro with Spring Boot and Shiro versions before 1.8.0, especially where Shiro gates public web routes or administrative functions.
Exploitation context
The bundle does not show CISA KEV listing or cite active exploitation. Treat public internet exposure as more urgent because the flaw concerns authentication bypass, but do not assume exploitation without additional evidence.
Researcher notes
The public record is sparse: no CVSS vector, no detailed affected configuration, and no exploit-status evidence in the bundle. Analysis should stay anchored to Shiro before 1.8.0 with Spring Boot and the vendor upgrade recommendation.
Mitigation direction
- Upgrade Apache Shiro to 1.8.0 or later.
- Inventory Spring Boot services that include Apache Shiro.
- Prioritize internet-facing and privileged-route applications.
- Check Apache, Oracle, and NetApp advisories for product-specific guidance.
- Review authentication logs for unexpected access patterns.
Validation and detection
- Confirm deployed Shiro versions in build manifests and runtime artifacts.
- Verify whether each Shiro deployment uses Spring Boot integration.
- Confirm protected routes still require authentication after upgrade.
- Run regression tests for login, session, and authorization flows.
- Check vendor advisories for downstream appliance or platform exposure.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-41303 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://lists.apache.org/thread.html/re470be1ffea44bca28ccb0e67a4cf5d744e2d2b981d00fdbbf5abc13%40%3Cannounce.shiro.apache.org%3ECVE reference · x_refsource_MISC
- [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 bypassCVE reference · mailing-list, x_refsource_MLIST
- https://www.oracle.com/security-alerts/cpujul2022.htmlCVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220609-0001/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.