CVE-2026-14535Public exploitNetwork attack vector

Code execution via MLAllowlist shared-state pollution

Published Jul 4, 2026 · Updated Jul 4, 2026

Protection bypass in Trail of Bits Fickling 0.1.11 and earlier allows attackers to execute code through a crafted pickle file. UnsafeImportsML records every import through AnalysisContext.shorten_code(), causing MLAllowlist to treat each later import as already reported and skip its allowlist check. Execution requires the MLAllowlist pass to share an analysis context with the earlier pass and the consuming application to deserialize a payload after a LIKELY_SAFE result.

CVSS severity9.8
Critical
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Protection bypass in Trail of Bits Fickling 0.1.11 and earlier allows attackers to execute code through a crafted pickle file. UnsafeImportsML records every import through AnalysisContext.shorten_code(), causing MLAllowlist to treat each later import as already reported and skip its allowlist check. Execution requires the MLAllowlist pass to share an analysis context with the earlier pass and the consuming application to deserialize a payload after a LIKELY_SAFE result.

The record

CVE
CVE-2026-14535
Published
Jul 4, 2026
Updated
Jul 4, 2026
Vendor
Trail of Bits
Product
Fickling
Classifications
CWE-693, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.1.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Trail of Bits · Ficklingversion=0 <=0.1.11

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8BombadilSystemsCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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