CVE-2026-3384Public exploit

Local process crash via recursive operator interpolation

Published Mar 1, 2026 · Updated Mar 1, 2026

Uncontrolled recursion in ChaiScript 6.0 and 6.1.0 allows local users to crash an embedding process via a crafted script. AST evaluation repeatedly re-enters a user-defined operator from an interpolated string without a recursion-depth guard, exhausting the native stack. The user must be able to supply script code to a local ChaiScript host; the demonstrated result is a segmentation-fault process crash.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled recursion in ChaiScript 6.0 and 6.1.0 allows local users to crash an embedding process via a crafted script. AST evaluation repeatedly re-enters a user-defined operator from an interpolated string without a recursion-depth guard, exhausting the native stack. The user must be able to supply script code to a local ChaiScript host; the demonstrated result is a segmentation-fault process crash.

The record

CVE
CVE-2026-3384
Published
Mar 1, 2026
Updated
Mar 1, 2026
Vendor
ChaiScript
Product
ChaiScript
Classifications
CWE-674, CWE-404, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.0
  2. Affected versionversion=6.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ChaiScript · ChaiScriptversion=6.0; version=6.1.0

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

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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