How severe is CVE-2021-35290?

CVE-2021-35290 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35290 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35290?

CVE-2021-35290 affects Balero Cms Project Balero Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35290?

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.

When was CVE-2021-35290 published?

CVE-2021-35290 was published on 2023-02-24 and last updated on 2026-06-17.

CVE-2021-35290

CVE-2021-35290 is a high-severity vulnerability in Balero Cms Project Balero Cms with a CVSS 3.x base score of 7.2. 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 7.2)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Balero Cms Project Balero Cms
Published: 2023-02-24
Last modified: 2026-06-17

Description

File Upload vulnerability in balerocms-src 0.8.3 allows remote attackers to run arbitrary code via rich text editor on /admin/main/mod-blog page.

Frequently asked questions

What is CVE-2021-35290?: File Upload vulnerability in balerocms-src 0.8.3 allows remote attackers to run arbitrary code via rich text editor on /admin/main/mod-blog page.
How severe is CVE-2021-35290?: CVE-2021-35290 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35290 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35290?: CVE-2021-35290 affects Balero Cms Project Balero Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35290?: 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.
When was CVE-2021-35290 published?: CVE-2021-35290 was published on 2023-02-24 and last updated on 2026-06-17.

References

https://github.com/anibalgomezprojects/balerocms-src/issues/2

Affected products (1)

cpe:2.3:a:balero_cms_project:balero_cms:0.8.3:*:*:*:*:*:*:*

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