OSD Subscribe <= 1.2.3 Reflected Cross-Site Scripting
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The OSD Subscribe WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the osd_subscribe_message parameter found in the ~/options/osd_subscribe_options_subscribers.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.2.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00895 59th 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
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| OSD Subscribe | OSD Subscribe | 1.2.3 – 1.2.3 | — | No fix listed | CNA |
- OSD Subscribe VendorOSD Subscribe Affected 1.2.3 – 1.2.3 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:outsidesource:osd_subscribe:*:*:*:*:*:wordpress:*:* | up to 1.2.3 | Vulnerable | Outsidesource |
- cpe:2.3:a:outsidesource:osd_subscribe:*:*:*:*:*:wordpress:*:* Versions up to 1.2.3 Vulnerable ·Outsidesource
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38351
- 2026-10-03 Alias added: GHSA-mwwm-v9vx-c276
References
Sources
- CVE-2021-38351 · CVE Program
- CVE-2021-38351 · NVD
- FIRST EPSS
- GHSA-mwwm-v9vx-c276 · GitHub Advisory Database · CC BY 4.0
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