Improper certificate validation in Nextcloud Social
Priority LOW 33CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
Missing validation of server certificates for out-going connections in Nextcloud Social < 0.4.0 allowed a man-in-the-middle attack.
Why it matters now
EPSS 0.00647 51st 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
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Nextcloud Social | Affects <0.4.0; Fixed in 0.4.0 | — | No fix listed | CNA |
- Nextcloud Social Vendor— Affected Affects <0.4.0; Fixed in 0.4.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8279
- 2026-10-03 Alias added: GHSA-7f2c-fj5r-9f75
- 2026-10-19 EPSS moved to the 50th–90th percentile
References
More nextcloud Social vulnerabilities
- TI-2020-06695 Improper access control in Nextcloud Social app version 0.3.1 allowed to read posts of any user. CVSS 3.1MEDIUM 5.3
Sources
- CVE-2020-8279 · CVE Program
- CVE-2020-8279 · NVD
- FIRST EPSS
- GHSA-7f2c-fj5r-9f75 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences