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CVE-2021-26296

23
FAUCET Score

CVE-2021-26296 describes a cross-site request forgery (CSRF) vulnerability in Apache MyFaces Core versions 2.2.0 through 2.3.7, 2.3-next-M1 through M4, and 3.0.0-RC1, as well as NetApp products utilizing MyFaces. The vulnerability stems from the use of cryptographically weak implicit and explicit CSRF tokens, allowing a sophisticated attacker to potentially predict future token values. This high-severity flaw (CVSS 7.5) has a high potential impact on confidentiality, integrity, and availability, though exploitation is difficult and requires user interaction. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0, <= 2.2.13CPE matchmatch criteria
cpe:2.3:a:apache:myfaces:*:*:*:*:*:*:*:*
>= 2.3.0, <= 2.3.7CPE matchmatch criteria
cpe:2.3:a:apache:myfaces:*:*:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:a:apache:myfaces:2.3:next-m1:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:a:apache:myfaces:2.3:next-m2:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:a:apache:myfaces:2.3:next-m3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.03%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0303 is in the 56th percentile among its peer group of 1,572 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.4 Bluesky, 0.2 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.6 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

mavenpatch availablevia ghsa
Product: org.apache.myfaces.core:myfaces-core-moduleFixed in: 2.0.25
mavenpatch availablevia ghsa
Product: org.apache.myfaces.core:myfaces-core-moduleFixed in: 2.1.19
mavenpatch availablevia ghsa
Product: org.apache.myfaces.core:myfaces-core-moduleFixed in: 2.2.14
mavenpatch availablevia ghsa
Product: org.apache.myfaces.core:myfaces-core-moduleFixed in: 2.3.8
redhatend of lifevia redhat_api
Product: Red Hat Decision Manager 7Fixed in: jsf-impl-myfaces
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: opendaylight
redhatend of lifevia redhat_api
Product: Red Hat Process Automation 7Fixed in: jsf-impl-myfaces

Vendor Advisories (2)

mavenGHSA-gq67-pp9w-43gphigh

Cryptographically weak CSRF tokens in Apache MyFaces

Jun 16, 2021
redhatCVE-2021-26296Moderate

myfaces: Cross-site request forgery vulnerability in Apache MyFaces

Feb 18, 2021

References

packetstormsecurity.com / files/161484/Apache-MyFaces-2.x-Cross-Site-Request-Forgery.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2021/Feb/66
Mailing ListThird Party Advisory
lists.apache.org / thread.html/r2b73e2356c6155e9ec78fdd8f72a4fac12f3e588014f5f535106ed9b%40%3Cannounce.apache.org%3E
Mailing ListVendor Advisory
security.netapp.com / advisory/ntap-20210528-0007
Third Party Advisory