CVE-2021-25976: Piranha CMS - Site-wide Cross-Site Request Forgery (CSRF)

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-16 · updated 2026-06-17
Weakness: CWE-352

Description

In PiranhaCMS, versions 4.0.0-alpha1 to 9.2.0 are vulnerable to cross-site request forgery (CSRF) when performing various actions supported by the management system, such as deleting a user, deleting a role, editing a post, deleting a media folder etc., when an ID is known.

Affected products

PiranhaCMS Piranha: from 4.0.1 through 9.2; 4.0.0, 4.0.0-alpha1, 4.0.0-alpha3, 4.0.0-alpha4, 4.0.0-alpha5, 4.0.0-alpha6 (+5)

References

https://github.com/PiranhaCMS/piranha.core/commit/e42abacdd0dd880ce9cf6607efcc24646ac82eda
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25976
https://github.com/PiranhaCMS/piranha.core/commit/e42abacdd0dd880ce9cf6607efcc24646ac82eda
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25976

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