OS Command injection vulnerability in mblog 3.5.0 allows attackers to execute arbitrary…
Priority HIGH 69CWE-434Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-434.
Summary
OS Command injection vulnerability in mblog 3.5.0 allows attackers to execute arbitrary code via crafted theme when it gets selected.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00973 62nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mblog_project:mblog:3.5.0:*:*:*:*:*:*:* | 3.5.0 | Vulnerable | Mblog Project |
- cpe:2.3:a:mblog_project:mblog:3.5.0:*:*:*:*:*:*:* Versions 3.5.0 Vulnerable ·Mblog Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27280
- 2026-10-03 Alias added: GHSA-wmhj-jq93-j3p7
References
More Mblog Project Mblog vulnerabilities
- TI-2020-13657 Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the signature field to /settings/profile. CVSS 3.1MEDIUM 5.4
- TI-2020-13656 Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the post content field to /post/editing. CVSS 3.1MEDIUM 5.4
- TI-2020-13655 Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the nickname field to /settings/profile. CVSS 3.1MEDIUM 5.4
- TI-2020-13654 Cross Site Scripting (XSS) vulnerability in mblog 3.5 via the post header field to /post/editing. CVSS 3.1MEDIUM 5.4
- TI-2021-21008 In mblog <= 3.5.0 there is a CSRF vulnerability in the background article management. CVSS 3.1MEDIUM 4.3
Sources
- CVE-2021-27280 · CVE Program
- CVE-2021-27280 · NVD
- FIRST EPSS
- GHSA-wmhj-jq93-j3p7 · GitHub Advisory Database · CC BY 4.0
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