Orchard Core CMS - Improper Session Termination after Password Change

published 2021-10-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-12805

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits: 0; none known

In “Orchard core CMS” application, versions 1.0.0-beta1-3383 to 1.0.0 are vulnerable to an improper session termination after password change. When a password has been changed by the user or by an administrator, a user that was already logged in, will still have access to the application even after the password was changed.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 18 mo ago (2025-04-30)

Exploit prediction

1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/OrchardCMS/OrchardCore/blob/v1.0.0/src/OrchardCore.Modules/OrchardCore.Users/Controllers/ResetPasswordController.cs#L123 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

OrchardCore Users

Classification

Weakness

CWE-613 DEPRECATED: Insufficient Session Expiration

References

github.com /OrchardCMS/OrchardCore/blob/v1.0.0/src/OrchardCore.Modules/OrchardCore.Users/Controllers/ResetPasswordControl
exploit, third-party-advisory
whitesourcesoftware.com /vulnerability-database/CVE-2021-25966
third-party-advisory

Sources

CVE List CVE-2021-25966
NVD CVE-2021-25966

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.

Summary