How severe is CVE-2022-50898?

CVE-2022-50898 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-50898 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-50898?

CVE-2022-50898 affects Kalyan02 Nanocms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-50898?

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

Does CVE-2022-50898 have an EU (EUVD) identifier?

Yes. CVE-2022-50898 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2648.

When was CVE-2022-50898 published?

CVE-2022-50898 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2022-50898

CVE-2022-50898 is a high-severity vulnerability in Kalyan02 Nanocms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.6
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2648
Weakness: CWE-434
Affected product: Kalyan02 Nanocms
Published: 2026-01-13
Last modified: 2026-06-17

Description

NanoCMS 0.4 contains an authenticated file upload vulnerability that allows remote code execution through unvalidated page content creation. Authenticated attackers can upload PHP files with arbitrary code to the server's pages directory by exploiting the page creation mechanism without proper input sanitization.

Frequently asked questions

What is CVE-2022-50898?: NanoCMS 0.4 contains an authenticated file upload vulnerability that allows remote code execution through unvalidated page content creation. Authenticated attackers can upload PHP files with arbitrary code to the server's pages directory by exploiting the page creation mechanism without proper input sanitization.
How severe is CVE-2022-50898?: CVE-2022-50898 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-50898 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-50898?: CVE-2022-50898 affects Kalyan02 Nanocms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-50898?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2022-50898 have an EU (EUVD) identifier?: Yes. CVE-2022-50898 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2648.
When was CVE-2022-50898 published?: CVE-2022-50898 was published on 2026-01-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kalyan02:nanocms:0.4:*:*:*:*:*:*:*

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