CVE-2026-9521CWE-1287CWE-20

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

Medium · published May 26, 2026

CVSS v4.0
6.3
EPSS
1%
Percentile
44.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00540 · 44.6th percentile
Weaknesses
CWE-1287 · Improper Validation of Specified Type of Input; CWE-20 · Improper Input Validation
Published
2026-05-26T02:00Z
EPSS history
Timeline
  • 26 MAY 02:00Z
    fraillt bitsery std_smart_ptr.h loadFromSharedState improper validation of specified type of input
    cvelistv5