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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-14803 Detail

Description

Mojo::JSON versions before 9.47 for Perl allow memory exhaustion via unbounded recursion in the pure-Perl decoder. The pure-Perl decode path (`_decode_value` dispatching to `_decode_array` and `_decode_object`) recurses with no depth limit, so a small deeply nested JSON document can consume excessive memory. This path is the default when Cpanel::JSON::XS is not installed or `MOJO_NO_JSON_XS=1` is set; the Cpanel::JSON::XS fast path is not affected. Any caller that decodes an untrusted JSON body, for example `Mojo::Message::json` reached through `$c->req->json`, can exhaust process memory and cause denial of service.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2026/07/06/2 CVE
https://github.com/mojolicious/mojo/commit/cc38b0554275c4d84f6b8b49bcbbc1bec2068fe1.patch CPANSec
https://metacpan.org/release/SRI/Mojolicious-9.47/changes CPANSec

Weakness Enumeration

CWE-ID CWE Name Source
CWE-674 Uncontrolled Recursion CPANSec  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-14803
NVD Published Date:
07/05/2026
NVD Last Modified:
07/06/2026
Source:
CPANSec