CVE-2020-24036

HIGH

PHP object injection in the Ajax endpoint of the backend in ForkCMS below version 5.8.3 allows an authenticated remote user to execute malicious code.

Affects 1 product across 1 vendor.

CVSS 3.18.8
EPSS3.0%
Percentile87th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, low privileges required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-502: Deserialization of Untrusted Data

Software deserializes untrusted data without validation, allowing crafted objects to execute arbitrary code.

Related Attack Patterns (CAPEC)
CAPEC-586 Object Injection
via CWE-502

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

PHP object injection vulnerability in ForkCMS below version 5.8.3 allows authenticated remote users to execute arbitrary code.

BSID: BS-2021-GLOBAL-148565-H • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2020-24036?
PHP object injection vulnerability in ForkCMS below version 5.8.3 allows authenticated remote users to execute arbitrary code.
What is the CVSS score for CVE-2020-24036?
CVE-2020-24036 has CVSS 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS: 3.0%.
Is CVE-2020-24036 actively exploited?
No confirmed active exploitation of CVE-2020-24036 as of 2026-09-25.
How do I remediate CVE-2020-24036?
Priority: IMMEDIATE.
What systems are affected by CVE-2020-24036?
CVE-2020-24036 affects Fork-Cms Fork Cms.
Vulnerability Details
CVE IDCVE-2020-24036
BSIDBS-2021-GLOBAL-148565-H BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published2021-03-04
Last Modified2026-07-09
ICS Relevance15%
Weakness (CWE)
Deserialization of Untrusted Data
SourceNVD
Official Description

PHP object injection in the Ajax endpoint of the backend in ForkCMS below version 5.8.3 allows an authenticated remote user to execute malicious code.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can exploit the PHP object injection vulnerability in the Ajax endpoint of the backend to inject malicious objects, leading to remote code execution.

Exploitation Likelihood: HIGH

Affected Products
VendorProductAffected Versions
Fork-Cms Fork Cms < 5.8.3
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 2051 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hashcda67fafd8ec23b609858df8fd2587ae46b6134bb20e07546d8dd970e74d541bd96f5dc1462447993401984d3afd0ae82cd6ee99d327bb2f602121603696f11e
Related CVEs affecting Fork-Cms
CVE-2019-15521 9.8 Spoon Library through 2014-02-06, as used in Fork CMS before 1.4.1 and other ... CVE-2020-23264 8.8 Cross-site request forgery (CSRF) in Fork-CMS before 5.8.2 allow remote attac... CVE-2021-28931 8.8 Arbitrary file upload vulnerability in Fork CMS 5.9.2 allows attackers to cre... CVE-2020-23960 8.8 Multiple cross-site request forgery (CSRF) vulnerabilities in the Admin Conso... CVE-2022-1064 8.8 SQL injection through marking blog comments on bulk as spam in GitHub reposit...
View all Fork-Cms CVEs →

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