CVE-2021-45807

CRITICAL

jpress v4.2.0 is vulnerable to command execution via io.jpress.web.admin._AddonController::doUploadAndInstall.

Affects 1 product across 1 vendor.

CVSS 3.19.8
EPSS2.1%
Percentile82th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
◆ AI Analysis — automated analysis, not human-reviewed

jpress v4.2.0 is vulnerable to command execution via the io.jpress.web.admin._AddonController::doUploadAndInstall method, allowing an attacker to execute arbitrary commands on the server.

BSID: BS-2022-GLOBAL-071473-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2021-45807?
jpress v4.2.0 is vulnerable to command execution via the io.jpress.web.admin._AddonController::doUploadAndInstall method, allowing an attacker to execute arbitrary commands on the server.
What is the CVSS score for CVE-2021-45807?
CVE-2021-45807 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 2.1%.
Is CVE-2021-45807 actively exploited?
No confirmed active exploitation of CVE-2021-45807 as of 2026-09-25.
How do I remediate CVE-2021-45807?
Priority: IMMEDIATE.
What systems are affected by CVE-2021-45807?
CVE-2021-45807 affects Jpress Jpress.
Vulnerability Details
CVE IDCVE-2021-45807
BSIDBS-2022-GLOBAL-071473-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2022-01-13
Last Modified2026-07-09
ICS Relevance0%
SourceNVD
Official Description

jpress v4.2.0 is vulnerable to command execution via io.jpress.web.admin._AddonController::doUploadAndInstall.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can exploit this vulnerability by uploading a malicious file through the _AddonController::doUploadAndInstall method, which can lead to command execution with the privileges of the web server.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Jpress Jpress 4.2.0
Remediation

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

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 1736 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 Hashe3fba7ef22596684ec9a82a3bcac6997a26a26f9fbc1c1680a0eb8a45ba9867aaa627ada794a369a882b22dd1a9bef4609d57885c3bd9cd03ba520b9d89b0769
Related CVEs affecting Jpress
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