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CVE Record

CVE-2021-26296: Cross-Site Request Forgery (CSRF) vulnerability in Apache MyFaces

In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

Apache MyFaces applications in the listed versions may generate CSRF tokens that are weaker than expected by default. A successful attacker could trick a logged-in user into performing unwanted actions. The source says token prediction is possible but difficult; no active exploitation is cited. Exposure is most likely in Java web applications that use affected Apache MyFaces Core versions with default CSRF token behavior, especially where authenticated users can perform sensitive state-changing actions. Treat this as a targeted application security remediation, not an internet-wide emergency. Prioritize affected business-critical MyFaces applications where a tricked authenticated user could change data, settings, or permissions. Mitigation focus: Inventory applications using the affected Apache MyFaces Core version ranges.; Check Apache MyFaces and downstream vendor advisories for fixed release or configuration guidance.; Upgrade or reconfigure only according to confirmed vendor guidance for your exact branch..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-352: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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.

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description · low confidence lookup

Credential and access behavior lookup

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cve · low confidence lookup

CVE-2021-26296 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Apache Software FoundationApache MyFaces CoreApache MyFaces Core 2.2, Apache MyFaces Core 2.3, Apache MyFaces Core 2.3-next, Apache MyFaces Core 3.0Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-352 · source CWE mapping

Cross-Site Request Forgery (CSRF)

Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.