CVE-2026-40588: CWE-620: Unverified Password Change in blueprintue blueprintue-self-hosted-edition
CVE-2026-40588 is a high-severity vulnerability in blueprintue-self-hosted-edition versions prior to 4. 2. 0. The password change form does not require verification of the current password, allowing an attacker with an authenticated session to change the password without knowing the original. This can lead to permanent account takeover. The vulnerability is fixed in version 4. 2. 0. No known exploits are reported in the wild.
AI Analysis
Technical Summary
The blueprintue-self-hosted-edition before version 4.2.0 contains an unverified password change vulnerability (CWE-620). Specifically, the password change form at /profile/{slug}/edit/ lacks a current_password field and does not verify the user's existing password before accepting a new one. An attacker who has obtained a valid authenticated session—via methods such as XSS, session sidejacking over HTTP, physical access to a logged-in browser, or stolen 'remember me' cookies—can change the account password immediately, resulting in permanent account takeover. This issue is resolved in version 4.2.0.
Potential Impact
An attacker with an authenticated session can change the account password without knowing the original password, leading to permanent account takeover. This compromises confidentiality and integrity of the affected user accounts. There is no impact on availability reported. No known exploits in the wild have been documented.
Mitigation Recommendations
Upgrade blueprintue-self-hosted-edition to version 4.2.0 or later, where this vulnerability is fixed. Until upgrading, restrict access to authenticated sessions and protect session tokens to prevent unauthorized access. Patch status is not explicitly stated in vendor advisories but the fix is included in version 4.2.0.
CVE-2026-40588: CWE-620: Unverified Password Change in blueprintue blueprintue-self-hosted-edition
Description
CVE-2026-40588 is a high-severity vulnerability in blueprintue-self-hosted-edition versions prior to 4. 2. 0. The password change form does not require verification of the current password, allowing an attacker with an authenticated session to change the password without knowing the original. This can lead to permanent account takeover. The vulnerability is fixed in version 4. 2. 0. No known exploits are reported in the wild.
CVSS v3.1
Score 8.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The blueprintue-self-hosted-edition before version 4.2.0 contains an unverified password change vulnerability (CWE-620). Specifically, the password change form at /profile/{slug}/edit/ lacks a current_password field and does not verify the user's existing password before accepting a new one. An attacker who has obtained a valid authenticated session—via methods such as XSS, session sidejacking over HTTP, physical access to a logged-in browser, or stolen 'remember me' cookies—can change the account password immediately, resulting in permanent account takeover. This issue is resolved in version 4.2.0.
Potential Impact
An attacker with an authenticated session can change the account password without knowing the original password, leading to permanent account takeover. This compromises confidentiality and integrity of the affected user accounts. There is no impact on availability reported. No known exploits in the wild have been documented.
Mitigation Recommendations
Upgrade blueprintue-self-hosted-edition to version 4.2.0 or later, where this vulnerability is fixed. Until upgrading, restrict access to authenticated sessions and protect session tokens to prevent unauthorized access. Patch status is not explicitly stated in vendor advisories but the fix is included in version 4.2.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-14T13:24:29.476Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e7b7ed19fe3cd2cdec7cc8
Added to database: 4/21/2026, 5:46:21 PM
Last enriched: 4/29/2026, 11:41:59 AM
Last updated: 6/5/2026, 7:30:24 AM
Views: 96
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.