CVE-2026-9521
fraillt bitsery std_smart_ptr.h loadFromSharedState improper validation of specified type of input
CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th
A security vulnerability has been detected in fraillt bitsery up to 5.2.4. Affected is the function loadFromSharedState in the library include/bitsery/ext/std_smart_ptr.h. Such manipulation leads to improper validation of specified type of input. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 5.2.5 is able to address this issue. The name of the patch is 66d16516e24893bebc1c8af52bf2fe9ad0735061. Upgrading the affected component is advised.
| CWE | CWE-1287 CWE-20 |
| Vendor | fraillt |
| Product | bitsery |
| Published | May 26, 2026 |
| Last Updated | May 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
fraillt / bitsery
5.2.0 5.2.1 5.2.2 5.2.3 5.2.4
References
vuldb.com: https://vuldb.com/vuln/365541 vuldb.com: https://vuldb.com/vuln/365541/cti vuldb.com: https://vuldb.com/submit/814457 gist.github.com: https://gist.github.com/TrebledJ/750abc64a826f19dd2d6774724629b71 github.com: https://github.com/fraillt/bitsery/blob/master/CHANGELOG.md#525-2025-10-09 github.com: https://github.com/fraillt/bitsery/commit/66d16516e24893bebc1c8af52bf2fe9ad0735061 github.com: https://github.com/fraillt/bitsery/releases/tag/v5.2.5 github.com: https://github.com/fraillt/bitsery/
Credits
🔍 trebledj (VulDB User)