CVE-2026-68914Network attack vectorHinoki check available

Process crash via unbounded JSON recursion

Published Sep 18, 2026 · Updated Sep 18, 2026

Uncontrolled recursion in Mojo::JSON before 9.47 allows remote attackers to crash an application process with deeply nested JSON. The pure-Perl _decode_array and _decode_object paths recursively process untrusted arrays and objects without limiting nesting depth, exhausting memory. Exposure requires an application to decode attacker-controlled JSON while Cpanel::JSON::XS is unavailable or MOJO_NO_JSON_XS selects the pure-Perl backend.

CVSS severity8.7
High
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Uncontrolled recursion in Mojo::JSON before 9.47 allows remote attackers to crash an application process with deeply nested JSON. The pure-Perl _decode_array and _decode_object paths recursively process untrusted arrays and objects without limiting nesting depth, exhausting memory. Exposure requires an application to decode attacker-controlled JSON while Cpanel::JSON::XS is unavailable or MOJO_NO_JSON_XS selects the pure-Perl backend.

The record

CVE
CVE-2026-68914
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
Mojolicious
Product
Mojo
Classifications
CWE-400, CWE-674, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=< 9.47

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mojolicious · Mojoversion=< 9.47

Published CVSS scores

8.7GitHub Security AdvisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-674Uncontrolled Recursion
T1499Endpoint Denial of Service

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

Your stack

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Your stack

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