{"cve":"CVE-2021-26296","nvd":{"published":"2021-02-19T09:15:13.283","modified":"2026-06-17T03:43:04.383","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-352"],"references":["http://packetstormsecurity.com/files/161484/Apache-MyFaces-2.x-Cross-Site-Request-Forgery.html","http://seclists.org/fulldisclosure/2021/Feb/66","https://lists.apache.org/thread.html/r2b73e2356c6155e9ec78fdd8f72a4fac12f3e588014f5f535106ed9b%40%3Cannounce.apache.org%3E","https://security.netapp.com/advisory/ntap-20210528-0007/","http://packetstormsecurity.com/files/161484/Apache-MyFaces-2.x-Cross-Site-Request-Forgery.html"],"products":["apache:myfaces","netapp:oncommand_insight"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-26296","score":0.02889,"percentile":0.86893,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gq67-pp9w-43gp","url":"https://osv.dev/vulnerability/GHSA-gq67-pp9w-43gp","summary":"Cryptographically weak CSRF tokens in Apache MyFaces","modified":"2026-09-10T03:49:06.075401802Z","packages":[{"ecosystem":"Maven","name":"org.apache.myfaces.core:myfaces-core-module","purl":"pkg:maven/org.apache.myfaces.core/myfaces-core-module","ranges":["<2.0.25"],"fixed":["2.0.25"]},{"ecosystem":"Maven","name":"org.apache.myfaces.core:myfaces-core-module","purl":"pkg:maven/org.apache.myfaces.core/myfaces-core-module","ranges":[">=2.1.0 <2.1.19"],"fixed":["2.1.19"]},{"ecosystem":"Maven","name":"org.apache.myfaces.core:myfaces-core-module","purl":"pkg:maven/org.apache.myfaces.core/myfaces-core-module","ranges":[">=2.2.0 <2.2.14"],"fixed":["2.2.14"]},{"ecosystem":"Maven","name":"org.apache.myfaces.core:myfaces-core-module","purl":"pkg:maven/org.apache.myfaces.core/myfaces-core-module","ranges":[">=2.3.0 <2.3.8"],"fixed":["2.3.8"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}