CVE-2026-9521: Improper Validation of Specified Type of Input in fraillt bitsery
CVE-2026-9521 is a medium severity vulnerability in the fraillt bitsery library versions up to 5. 2. 4. The issue exists in the loadFromSharedState function within include/bitsery/ext/std_smart_ptr. h, where improper validation of the specified input type can occur. This vulnerability can be exploited remotely and has been publicly disclosed. Upgrading to version 5. 2. 5 addresses the issue.
AI Analysis
Technical Summary
The fraillt bitsery library up to version 5.2.4 contains a vulnerability in the loadFromSharedState function of std_smart_ptr.h that allows improper validation of input types. This flaw can be triggered remotely, potentially leading to unexpected behavior or security risks. The vulnerability is fixed in version 5.2.5 with patch 66d16516e24893bebc1c8af52bf2fe9ad0735061.
Potential Impact
The vulnerability allows remote attackers to manipulate input types improperly validated by the loadFromSharedState function, which could lead to security issues such as data corruption or other unintended effects. The CVSS 4.0 base score is 6.3 (medium severity), indicating a moderate impact with network attack vector, low complexity, no privileges required, and no user interaction needed.
Mitigation Recommendations
Upgrade the fraillt bitsery library to version 5.2.5 or later, which contains the official fix for this vulnerability (patch 66d16516e24893bebc1c8af52bf2fe9ad0735061). No other mitigation steps are indicated by the vendor advisory.
CVE-2026-9521: Improper Validation of Specified Type of Input in fraillt bitsery
Description
CVE-2026-9521 is a medium severity vulnerability in the fraillt bitsery library versions up to 5. 2. 4. The issue exists in the loadFromSharedState function within include/bitsery/ext/std_smart_ptr. h, where improper validation of the specified input type can occur. This vulnerability can be exploited remotely and has been publicly disclosed. Upgrading to version 5. 2. 5 addresses the issue.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The fraillt bitsery library up to version 5.2.4 contains a vulnerability in the loadFromSharedState function of std_smart_ptr.h that allows improper validation of input types. This flaw can be triggered remotely, potentially leading to unexpected behavior or security risks. The vulnerability is fixed in version 5.2.5 with patch 66d16516e24893bebc1c8af52bf2fe9ad0735061.
Potential Impact
The vulnerability allows remote attackers to manipulate input types improperly validated by the loadFromSharedState function, which could lead to security issues such as data corruption or other unintended effects. The CVSS 4.0 base score is 6.3 (medium severity), indicating a moderate impact with network attack vector, low complexity, no privileges required, and no user interaction needed.
Mitigation Recommendations
Upgrade the fraillt bitsery library to version 5.2.5 or later, which contains the official fix for this vulnerability (patch 66d16516e24893bebc1c8af52bf2fe9ad0735061). No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-25T19:17:31.511Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1500ffa5ae1af1aa1c8a44
Added to database: 5/26/2026, 2:10:07 AM
Last enriched: 5/26/2026, 2:24:52 AM
Last updated: 5/26/2026, 3:16:00 AM
Views: 6
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