Linux Distros Unpatched Vulnerability : CVE-2026-104635

high Nessus Plugin ID 364413

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- Uncontrolled Recursion vulnerability in Protobuf.JSON.Decode in elixir-protobuf protobuf allows an unauthenticated remote attacker to crash the decoding process via a deeply nested JSON document. Any application that decodes attacker-supplied JSON with Protobuf.JSON.decode/3, Protobuf.JSON.decode!/3, or Protobuf.JSON.from_decoded/3 into a schema that contains a self-referential or cyclic message type is affected. In lib/protobuf/json/decode.ex, the embedded-message clause of decode_singular/3 recurses into internal_from_json_data/3 once per nesting level without incrementing or checking the decoder's depth counter. The depth guard increase_depth_and_maybe_throw/1 covers only the Google.Protobuf.ListValue and Google.Protobuf.Struct clauses, so the recursion_limit option has no effect on user-defined message types.
Each nesting level allocates a stack frame and heap objects, and a sufficiently deep document exhausts the memory of the decoding process. Confidentiality and integrity are not affected. This issue affects protobuf: from 0.8.0 before 0.17.1. (CVE-2026-104635)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 364413

File Name: unpatched_CVE_2026_104635.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 10/9/2026

Updated: 10/9/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-104635

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:protobuf-compiler, p-cpe:/a:centos:centos:protobuf-devel, p-cpe:/a:centos:centos:protobuf-emacs-el, p-cpe:/a:centos:centos:protobuf-emacs, p-cpe:/a:centos:centos:protobuf-java, p-cpe:/a:centos:centos:protobuf-javadoc, p-cpe:/a:centos:centos:protobuf-lite-devel, p-cpe:/a:centos:centos:protobuf-lite-static, p-cpe:/a:centos:centos:protobuf-lite, p-cpe:/a:centos:centos:protobuf-python, p-cpe:/a:centos:centos:protobuf-static, p-cpe:/a:centos:centos:protobuf-vim, p-cpe:/a:centos:centos:protobuf, p-cpe:/a:centos:centos:python3-protobuf, p-cpe:/a:redhat:enterprise_linux:protobuf-compiler, p-cpe:/a:redhat:enterprise_linux:protobuf-devel, p-cpe:/a:redhat:enterprise_linux:protobuf-emacs-el, p-cpe:/a:redhat:enterprise_linux:protobuf-emacs, p-cpe:/a:redhat:enterprise_linux:protobuf-java, p-cpe:/a:redhat:enterprise_linux:protobuf-javadoc, p-cpe:/a:redhat:enterprise_linux:protobuf-lite-devel, p-cpe:/a:redhat:enterprise_linux:protobuf-lite-static, p-cpe:/a:redhat:enterprise_linux:protobuf-lite, p-cpe:/a:redhat:enterprise_linux:protobuf-python, p-cpe:/a:redhat:enterprise_linux:protobuf-static, p-cpe:/a:redhat:enterprise_linux:protobuf-vim, p-cpe:/a:redhat:enterprise_linux:protobuf, p-cpe:/a:redhat:enterprise_linux:python3-protobuf

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/9/2026

Reference Information

CVE: CVE-2026-104635

Detections

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