How severe is CVE-2021-45807?

CVE-2021-45807 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-45807 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45807?

CVE-2021-45807 affects Jpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45807?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-45807 published?

CVE-2021-45807 was published on 2022-01-13 and last updated on 2026-07-05.

CVE-2021-45807

CVE-2021-45807 is a critical-severity vulnerability in Jpress with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jpress
Published: 2022-01-13
Last modified: 2026-07-05

Description

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

Frequently asked questions

What is CVE-2021-45807?: jpress v4.2.0 is vulnerable to command execution via io.jpress.web.admin._AddonController::doUploadAndInstall.
How severe is CVE-2021-45807?: CVE-2021-45807 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-45807 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45807?: CVE-2021-45807 affects Jpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45807?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-45807 published?: CVE-2021-45807 was published on 2022-01-13 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:jpress:jpress:4.2.0:*:*:*:*:*:*:*

More vulnerabilities in Jpress

CVE-2024-50919 — Critical (CVSS 9.8): Jpress until v5.1.1 has arbitrary file uploads on the windows platform, and the construction of non-standard file…
CVE-2024-43033 — High (CVSS 8.8): JPress through 5.1.1 on Windows has an arbitrary file upload vulnerability that could cause arbitrary code execution…
CVE-2022-23330 — High (CVSS 8.8): A remote code execution (RCE) vulnerability in HelloWorldAddonController.java of jpress v4.2.0 allows attackers to…
CVE-2021-46114 — High (CVSS 8.8): jpress v 4.2.0 is vulnerable to RCE via io.jpress.module.product.ProductNotifyKit#doSendEmail. The admin panel provides…
CVE-2021-45808 — High (CVSS 8.8): jpress v4.2.0 allows users to register an account by default. With the account, user can upload arbitrary files to the…
CVE-2021-45806 — High (CVSS 8.8): jpress v4.2.0 admin panel provides a function through which attackers can modify the template and inject some malicious…

All CVEs affecting Jpress →