CVE-2026-118938 Trail of Bits fickling - Remote Code Execution

Trail of Bits fickling 0.1.12 contains a remote code execution vulnerability caused by unsafe resolution of dotted __qualname__ in pickle STACK_GLOBAL operand, letting attackers execute arbitrary code via crafted pickle loading, exploit requires loading malicious pickle with fickling.load().

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.48% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
30 October 2026
Updated
1 November 2026
Weakness
CWE-502

Vendor fix

Update to a version that properly resolves or flags dotted attribute-path imports or apply vendor patches addressing this issue.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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