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 account password without knowing the original one. This leads to permanent account takeover. The vulnerability is fixed in version 4. 2. 0. There are no known exploits in the wild, and the product is not a cloud service.
AI Analysis
Technical Summary
The blueprintue-self-hosted-edition before version 4.2.0 contains an unverified password change vulnerability (CWE-620). The password change endpoint at /profile/{slug}/edit/ lacks a current_password field and does not verify the existing password before accepting a new one. An attacker who has obtained a valid authenticated session—via XSS, session sidejacking over HTTP, physical access to a logged-in browser, or stolen "remember me" cookies—can change the password without the original credential, resulting in permanent account takeover. This issue is resolved in version 4.2.0.
Potential Impact
Successful exploitation allows an attacker with an authenticated session to immediately change the account password without knowing the original password, leading to permanent account takeover. This compromises confidentiality and integrity of the affected user account. There is no impact on availability. No known exploits are reported in the wild.
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 use. Patch status is not explicitly stated in the vendor advisory, 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 account password without knowing the original one. This leads to permanent account takeover. The vulnerability is fixed in version 4. 2. 0. There are no known exploits in the wild, and the product is not a cloud service.
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). The password change endpoint at /profile/{slug}/edit/ lacks a current_password field and does not verify the existing password before accepting a new one. An attacker who has obtained a valid authenticated session—via XSS, session sidejacking over HTTP, physical access to a logged-in browser, or stolen "remember me" cookies—can change the password without the original credential, resulting in permanent account takeover. This issue is resolved in version 4.2.0.
Potential Impact
Successful exploitation allows an attacker with an authenticated session to immediately change the account password without knowing the original password, leading to permanent account takeover. This compromises confidentiality and integrity of the affected user account. There is no impact on availability. No known exploits are reported in the wild.
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 use. Patch status is not explicitly stated in the vendor advisory, 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: 4/21/2026, 6:01:26 PM
Last updated: 4/21/2026, 7:57:34 PM
Views: 5
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