CVE-2021-25977

5.4 mediumEPSS 0.7%

Medium (5.4) in dotnetfoundation piranha cms. EPSS 0.7% chance of exploitation in the next 30 days.

In PiranhaCMS, versions 7.0.0 to 9.1.1 are vulnerable to stored XSS due to the page title improperly sanitized. By creating a page with a specially crafted page title, a low privileged user can trigger arbitrary JavaScript execution.

Severity

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-10-25
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dotnetfoundation:piranha_cms

References

https://github.com/PiranhaCMS/piranha.core/commit/543bc53c7dbd28c793ec960b57fb0e716c6b18d7
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25977
https://github.com/PiranhaCMS/piranha.core/commit/543bc53c7dbd28c793ec960b57fb0e716c6b18d7
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25977

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