CVE-2021-45808

HIGH

jpress v4.2.0 allows users to register an account by default. With the account, user can upload arbitrary files to the server.

Affects 1 product across 1 vendor.

CVSS 3.18.8
EPSS1.3%
Percentile70th
PatchPatched
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-434: Unrestricted Upload of File with Dangerous Type

Application allows file uploads without validating type, enabling upload of executable code or web shells.

Related Attack Patterns (CAPEC)
CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
via CWE-434

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

◆ AI Analysis — automated analysis, not human-reviewed

CVE-2021-45808 in jpress v4.2.0 allows unauthorized users to register and upload arbitrary files to the server, posing a significant security risk.

BSID: BS-2022-GLOBAL-301793-H • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2021-45808?
CVE-2021-45808 in jpress v4.2.0 allows unauthorized users to register and upload arbitrary files to the server, posing a significant security risk.
What is the CVSS score for CVE-2021-45808?
CVE-2021-45808 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: 1.3%.
Is CVE-2021-45808 actively exploited?
No confirmed active exploitation of CVE-2021-45808 as of 2026-05-30.
How do I remediate CVE-2021-45808?
Priority: IMMEDIATE. Advisory: http://jpress.com PSIRT: [email protected]
What systems are affected by CVE-2021-45808?
CVE-2021-45808 affects Jpress Jpress.
Vulnerability Details
CVE IDCVE-2021-45808
BSIDBS-2022-GLOBAL-301793-H BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published2022-01-19
Last Modified2024-11-21
ICS Relevance0%
Weakness (CWE)
Unrestricted Upload of File with Dangerous Type
SourceNVD
Official Description

jpress v4.2.0 allows users to register an account by default. With the account, user can upload arbitrary files to the server.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can register a new account on the jpress platform and then upload malicious files, such as web shells, to gain unauthorized access to the server.

Exploitation Likelihood: HIGH

Affected Products
VendorProductAffected Versions
Jpress Jpress 4.2.0
Remediation
View Vendor Advisory →

Remediation Priority: IMMEDIATE

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 1730 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 Hashff99ea36f84112c42364b360364251840ef61cbf733cb7af297b8344f95798e07c72b766bbbd8224f28919c872d5e2e158ea46dc2b5ba6f280f6a3a01bdcd762
Related CVEs affecting Jpress
CVE-2021-45807 9.8 jpress v4.2.0 is vulnerable to command execution via io.jpress.web.admin._Add... CVE-2024-50919 9.8 Jpress until v5.1.1 has arbitrary file uploads on the windows platform, and t... CVE-2022-23330 8.8 A remote code execution (RCE) vulnerability in HelloWorldAddonController.java... CVE-2021-45806 8.8 jpress v4.2.0 admin panel provides a function through which attackers can mod... CVE-2021-46114 8.8 jpress v 4.2.0 is vulnerable to RCE via io.jpress.module.product.ProductNotif...
View all Jpress CVEs →

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