CVE-2021-25966Network attack vector

Continued access via unrevoked authentication sessions

Published Oct 10, 2021 · Updated Apr 30, 2025

Insufficient session expiration in OrchardCore.Users 1.0.0-beta1-3383 through 1.0.0 allows remote authenticated users to retain access. The password reset path in ResetPasswordController changes the credential without invalidating authentication cookies issued before the change. An attacker must possess a valid pre-change session; that session continues to authorize application access after either self-service or administrator-initiated password replacement.

CVSS severity8.8
High
EPSS probability1.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in OrchardCore.Users 1.0.0-beta1-3383 through 1.0.0 allows remote authenticated users to retain access. The password reset path in ResetPasswordController changes the credential without invalidating authentication cookies issued before the change. An attacker must possess a valid pre-change session; that session continues to authorize application access after either self-service or administrator-initiated password replacement.

The record

CVE
CVE-2021-25966
Published
Oct 10, 2021
Updated
Apr 30, 2025
Vendor
OrchardCore
Product
OrchardCore.Users
Classifications
CWE-613, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0-beta1-3383 <unspecified
  2. Affected versionversion=unspecified <=1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OrchardCore · OrchardCore.Usersversion=1.0.0-beta1-3383 <unspecified; version=unspecified <=1.0.0

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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