CVE-2026-74787Public exploitNetwork attack vector

Process crash via object.to_json recursion

Published Aug 16, 2026 · Updated Aug 16, 2026

Denial of service in Scriban before 7.0.0 allows remote attackers to crash the hosting .NET process via crafted templates. In ObjectFunctions.cs, object.to_json serializes object graphs through the internal WriteValue() helper with no depth limit, circular-reference detection, or stack-overflow guard, so a self-referencing object recurses until StackOverflowException terminates the process. Exposure depends on an application rendering attacker-controlled Scriban templates or attacker-influenced objects through object.to_json; the published impact is an unrecoverable process crash, not code execution or data modification.

CVSS severity8.7
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Scriban before 7.0.0 allows remote attackers to crash the hosting .NET process via crafted templates. In ObjectFunctions.cs, object.to_json serializes object graphs through the internal WriteValue() helper with no depth limit, circular-reference detection, or stack-overflow guard, so a self-referencing object recurses until StackOverflowException terminates the process. Exposure depends on an application rendering attacker-controlled Scriban templates or attacker-influenced objects through object.to_json; the published impact is an unrecoverable process crash, not code execution or data modification.

The record

CVE
CVE-2026-74787
Published
Aug 16, 2026
Updated
Aug 16, 2026
Vendor
Scriban
Product
Scriban
Classifications
CWE-674, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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=0 <7.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Scriban · Scribanversion=0 <7.0.0

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5ScribanCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-674Uncontrolled Recursion
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo