CVE-2021-27280
CVE-2021-27280 is a high-severity vulnerability in Mblog Project Mblog with a CVSS 3.x base score of 7.8. 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 7.8)
- EPSS exploit prediction: 1% (58th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: Mblog Project Mblog
- Published:
- Last modified:
Description
OS Command injection vulnerability in mblog 3.5.0 allows attackers to execute arbitrary code via crafted theme when it gets selected.
Frequently asked questions
- What is CVE-2021-27280?
- OS Command injection vulnerability in mblog 3.5.0 allows attackers to execute arbitrary code via crafted theme when it gets selected.
- How severe is CVE-2021-27280?
- CVE-2021-27280 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-27280 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27280?
- CVE-2021-27280 affects Mblog Project Mblog. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-27280?
- 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-2021-27280 published?
- CVE-2021-27280 was published on 2023-05-08 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mblog_project:mblog:3.5.0:*:*:*:*:*:*:*
More vulnerabilities in Mblog Project Mblog
- CVE-2020-19619 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the signature field to /settings/profile.
- CVE-2020-19618 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the post content field to /post/editing.
- CVE-2020-19617 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the nickname field to /settings/profile.
- CVE-2020-19616 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the post header field to /post/editing.
- CVE-2021-46028 — Medium (CVSS 4.3): In mblog <= 3.5.0 there is a CSRF vulnerability in the background article management. The attacker constructs a CSRF…
All CVEs affecting Mblog Project Mblog →
Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities
- CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
- CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
- CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
- CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
- CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
- CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…
Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →