CVE-2020-8279 json
Missing validation of server certificates for out-going connections in Nextcloud Social < 0.4.0 allowed a man-in-the-middle attack.
published 2020-11-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29147
- cvss
- 7.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
Missing validation of server certificates for out-going connections in Nextcloud Social < 0.4.0 allowed a man-in-the-middle attack.
Patch / fix
- nextcloud social 0.4.0
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/915585 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
Affected products
- n/a Nextcloud Social
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
hackerone.com
/reports/915585
exploit, third-party-advisory
-
nextcloud.com
/security/advisory/?id=NC-SA-2020-043
broken-link, product
Sources
- CVE List CVE-2020-8279
- NVD CVE-2020-8279
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