Skip to main content
No exploitation reportedFix available

CVE-2021-26296

No exploitation reported by the sources we read.

  • Published2021-02-19
  • WeaknessCWE-352

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2021-02-1909:15CVE publishedNVD

Versions per branch

NVD · OSV
Apache myfaces
BranchAffectedFixed in
2.2≥ 2.2.0, ≤ 2.2.13no fix published
2.3≥ 2.3.0, ≤ 2.3.7no fix published
2.3= 2.3no fix published
3.0= 3.0.0no fix published
myfaces-core-module
BranchAffectedFixed in
2.3≥ 2.3.0, < 2.3.82.3.8
2.2≥ 2.2.0, < 2.2.142.2.14
2.1≥ 2.1.0, < 2.1.192.1.19
2.0< 2.0.252.0.25
Netapp oncommand insight
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2021-26296 Red Hat Product Security5 known affected

    myfaces: Cross-site request forgery vulnerability in Apache MyFaces

    jsf-impl-myfaces as a component of Red Hat Decision Manager 7 · myfaces-impl as a component of Red Hat JBoss Enterprise Application Platform 6 · opendaylight as a component of Red Hat OpenStack Platform 13 (Queens) · +2 more

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2021-26296 · 1 productOut of support scope
  2. No fix planned, says the vendor Red Hat Product Security CVE-2021-26296 · 4 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05.1read 2026-10-23
  • CNAweakness (CWE)CWE-352known since 2026-10-23
  • NVDweakness (CWE)CWE-352read 2026-10-23
  • FIRST EPSSEPSS score2.9 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2021-05-07

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-02-19
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-gq67-pp9w-43gp

Frequently asked questions

What is CVE-2021-26296?

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.

Is CVE-2021-26296 actively exploited?

Active exploitation of CVE-2021-26296 has not been confirmed. Its EPSS score was 2.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-26296?

CVE-2021-26296 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Running myfaces? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record