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Vulnerability Details :

CVE-2026-40587

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-21 Apr, 2026 | 17:11
Updated At-21 Apr, 2026 | 20:37
Rejected At-
Credits

blueprintUE: Active Sessions Are Not Invalidated After Password Change or Reset

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a user changes their password via the profile edit page, or when a password reset is completed via the reset link, neither operation invalidates existing authenticated sessions for that user. A server-side session store associates userID → session; the current password change/reset flow updates only the password column in the users table and does not destroy or mark invalid any active sessions. As a result, an attacker who has already compromised a session retains full access to the account indefinitely — even after the legitimate user has detected the intrusion and changed their password — until the session's natural expiry time (configured as SESSION_GC_MAXLIFETIME, defaulting to 86400 seconds / 24 hours, with SESSION_LIFETIME=0 meaning persistent until browser close or GC, whichever is later). This vulnerability is fixed in 4.2.0.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:21 Apr, 2026 | 17:11
Updated At:21 Apr, 2026 | 20:37
Rejected At:
▼CVE Numbering Authority (CNA)
blueprintUE: Active Sessions Are Not Invalidated After Password Change or Reset

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a user changes their password via the profile edit page, or when a password reset is completed via the reset link, neither operation invalidates existing authenticated sessions for that user. A server-side session store associates userID → session; the current password change/reset flow updates only the password column in the users table and does not destroy or mark invalid any active sessions. As a result, an attacker who has already compromised a session retains full access to the account indefinitely — even after the legitimate user has detected the intrusion and changed their password — until the session's natural expiry time (configured as SESSION_GC_MAXLIFETIME, defaulting to 86400 seconds / 24 hours, with SESSION_LIFETIME=0 meaning persistent until browser close or GC, whichever is later). This vulnerability is fixed in 4.2.0.

Affected Products
Vendor
blueprintue
Product
blueprintue-self-hosted-edition
Versions
Affected
  • < 4.2.0
Problem Types
TypeCWE IDDescription
CWECWE-613CWE-613: Insufficient Session Expiration
Type: CWE
CWE ID: CWE-613
Description: CWE-613: Insufficient Session Expiration
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg
x_refsource_CONFIRM
Hyperlink: https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg
exploit
Hyperlink: https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:21 Apr, 2026 | 18:16
Updated At:22 Apr, 2026 | 21:16

blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a user changes their password via the profile edit page, or when a password reset is completed via the reset link, neither operation invalidates existing authenticated sessions for that user. A server-side session store associates userID → session; the current password change/reset flow updates only the password column in the users table and does not destroy or mark invalid any active sessions. As a result, an attacker who has already compromised a session retains full access to the account indefinitely — even after the legitimate user has detected the intrusion and changed their password — until the session's natural expiry time (configured as SESSION_GC_MAXLIFETIME, defaulting to 86400 seconds / 24 hours, with SESSION_LIFETIME=0 meaning persistent until browser close or GC, whichever is later). This vulnerability is fixed in 4.2.0.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-613Secondarysecurity-advisories@github.com
CWE ID: CWE-613
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mgsecurity-advisories@github.com
N/A
https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

2Records found

CVE-2026-22706
Matching Score-4
Assigner-GitHub, Inc.
ShareView Details
Matching Score-4
Assigner-GitHub, Inc.
CVSS Score-2.1||LOW
EPSS-0.06% / 19.63%
||
7 Day CHG~0.00%
Published-14 May, 2026 | 18:38
Updated-16 May, 2026 | 03:23
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Strapi: Password Reset Does Not Revoke Existing Refresh Sessions

Strapi is an open source headless content management system. In Strapi versions prior to 5.33.3, changing or resetting a user's password did not invalidate the user's existing refresh-token sessions by default. The refresh-token invalidation step in the users-permissions and admin authentication controllers was conditional on a caller-supplied `deviceId`. When a password change or reset request did not include a `deviceId`, no refresh tokens were revoked, leaving every prior session active. An attacker who had previously obtained a refresh token could continue minting new access tokens after the legitimate user reset their password, allowing persistent unauthorized access for the lifetime of the refresh token (up to 30 days by default). Rotating credentials no longer terminated an active attacker session, defeating password reset as a containment measure. The patch in version 5.33.3 invalidates all refresh tokens associated with the user on every password change and password reset, regardless of whether a `deviceId` is supplied. A new device-scoped session is then issued to the caller as part of the response.

Action-Not Available
Vendor-Strapi, Inc.
Product-strapistrapi@strapi/admin@strapi/plugin-users-permissions
CWE ID-CWE-613
Insufficient Session Expiration
CVE-2023-2788
Matching Score-4
Assigner-Mattermost, Inc.
ShareView Details
Matching Score-4
Assigner-Mattermost, Inc.
CVSS Score-6.2||MEDIUM
EPSS-0.10% / 26.96%
||
7 Day CHG~0.00%
Published-16 Jun, 2023 | 08:58
Updated-06 Dec, 2024 | 23:00
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Deactivated user can retain access using oauth2 api

Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker's account is deactivated.

Action-Not Available
Vendor-Mattermost, Inc.
Product-mattermostMattermost
CWE ID-CWE-862
Missing Authorization
CWE ID-CWE-613
Insufficient Session Expiration
Details not found