CVE-2021-25976
Piranha CMS - Site-wide Cross-Site Request Forgery (CSRF)
- Published
- Updated
- Reserved
- Assigned by
- Mend
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By Mend
- 10 months later
· 10 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| MendCNA (assigner) | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
Affected products
- affected 4.0.0-alpha1 – < unspecified
- affected unspecified – ≤ 9.2.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- NuGetPiranhaGHSA-ppq7-88c7-q879 (opens in a new tab)
What to do
Solution: Update to 10.0.0
References (2)
- https://github.com/PiranhaCMS/piranha.core/commit/e42abacdd0dd880ce9cf6607efcc24646ac82eda (opens in a new tab)x_refsource_MISCx_transferred
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25976 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-ppq7-88c7-q879 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-25976)Record last updated .