CVE-2021-25976 json
Piranha CMS - Site-wide Cross-Site Request Forgery (CSRF)
published 2021-11-16 4 y ago modified 2026-06-17 4 mo ago also GHSA-ppq7-88c7-q879 , EUVD-2021-2374
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:H/Au:N/C:N/I:P/A:P |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Piranha | >=4.0.0-alpha1, <10.0-alpha1 |
10.0-alpha1 |
Affected products
- PiranhaCMS Piranha
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/PiranhaCMS/piranha.core/commit/e42abacdd0dd880ce9cf6607efcc24646ac82eda
web, patch, third-party-advisory
-
whitesourcesoftware.com
/vulnerability-database/CVE-2021-25976
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-25976
advisory
-
github.com
/PiranhaCMS/piranha.core
package
Sources
- CVE List CVE-2021-25976
- GitHub Advisory GHSA-ppq7-88c7-q879
- NVD CVE-2021-25976
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.