CVE-2026-9521

HIGH

fraillt bitsery std_smart_ptr.h loadFromSharedState improper validation of specified type of input

Title source: cna
STIX 2.1

Description

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.

References (8)

Core 8
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-365541 | fraillt bitsery std_smart_ptr.h loadFromSharedState improper validation of specified type of input
https://vuldb.com/vuln/365541
Signature, Permissions Required signature permissions-required
VDB-365541 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/365541/cti
Third Party Advisory third-party-advisory
Submit #814457 | fraillt bitsery 5.2.4 CWE-1287, CWE-843 (Type Confusion)
https://vuldb.com/submit/814457

Scores

CVSS v3 7.3
EPSS 0.0040
EPSS Percentile 31.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1287 CWE-20
Status published
Products (6)
fraillt/bitsery 5.2.0
fraillt/bitsery 5.2.1
fraillt/bitsery 5.2.2
fraillt/bitsery 5.2.3
fraillt/bitsery 5.2.4
fraillt/bitsery 5.2.5
Published May 26, 2026
Tracked Since May 26, 2026