CVE-2026-76819Hinoki check available

Native code execution via Goja heap overwrite

Published Sep 22, 2026 · Updated Sep 22, 2026

Code execution in ProjectDiscovery Nuclei before 3.10.0 allows attackers to execute native code via an untrusted JavaScript template. The embedded Goja runtime in pkg/js/ performs an out-of-bounds heap write on attacker-controlled JavaScript during template evaluation. Exploitation requires an operator or integrated SDK to accept the template, but unsigned JavaScript templates execute by default without the code-template flag.

CVSS severity8.6
High
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code execution in ProjectDiscovery Nuclei before 3.10.0 allows attackers to execute native code via an untrusted JavaScript template. The embedded Goja runtime in pkg/js/ performs an out-of-bounds heap write on attacker-controlled JavaScript during template evaluation. Exploitation requires an operator or integrated SDK to accept the template, but unsigned JavaScript templates execute by default without the code-template flag.

The record

CVE
CVE-2026-76819
Published
Sep 22, 2026
Updated
Sep 22, 2026
Vendor
ProjectDiscovery
Product
Nuclei
Classifications
CWE-787, CWE-94, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 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=>= 3.0.0, < 3.10.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ProjectDiscovery · Nucleiversion=>= 3.0.0, < 3.10.0

Published CVSS scores

8.6GitHub Security AdvisoryCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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

Technologies

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Your stack

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