Vulnerabilities > Nextcloud > Nextcloud Server > Medium
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-01-26 | CVE-2020-8293 | Resource Exhaustion vulnerability in Nextcloud Server A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules. | 6.5 |
| 2020-11-16 | CVE-2020-8152 | Insufficiently Protected Credentials vulnerability in Nextcloud Server Insufficient protection of the server-side encryption keys in Nextcloud Server 19.0.1 allowed an attacker to replace the public key to decrypt them later on. | 4.4 |
| 2020-11-09 | CVE-2020-8150 | Missing Encryption of Sensitive Data vulnerability in Nextcloud Server A cryptographic issue in Nextcloud Server 19.0.1 allowed an attacker to downgrade the encryption scheme and break the integrity of encrypted files. | 4.1 |
| 2020-11-09 | CVE-2020-8133 | Improper Verification of Cryptographic Signature vulnerability in Nextcloud Server 19.0.1 A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file. | 5.3 |
| 2020-11-02 | CVE-2020-8236 | Improper Authentication vulnerability in Nextcloud Server A wrong configuration in Nextcloud Server 19.0.1 incorrectly made the user feel the passwordless WebAuthn is also a two factor verification by asking for the PIN of the passwordless WebAuthn but not verifying it. | 6.8 |
| 2020-10-05 | CVE-2020-8223 | Improper Privilege Management vulnerability in multiple products A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves. | 6.5 |
| 2020-05-12 | CVE-2020-8155 | Cross-site Scripting vulnerability in Nextcloud Server An outdated 3rd party library in the Files PDF viewer for Nextcloud Server 18.0.2 caused a Cross-site scripting vulnerability when opening a malicious PDF. | 5.4 |
| 2020-03-20 | CVE-2020-8139 | Missing Authorization vulnerability in multiple products A missing access control check in Nextcloud Server < 18.0.1, < 17.0.4, and < 16.0.9 causes hide-download shares to be downloadable when appending /download to the URL. | 6.5 |
| 2020-03-20 | CVE-2020-8138 | Server-Side Request Forgery (SSRF) vulnerability in Nextcloud Server A missing check for IPv4 nested inside IPv6 in Nextcloud server < 17.0.1, < 16.0.7, and < 15.0.14 allowed a Server-Side Request Forgery (SSRF) vulnerability when subscribing to a malicious calendar URL. | 6.5 |
| 2020-02-04 | CVE-2020-8122 | Improper Input Validation vulnerability in Nextcloud Server A missing check in Nextcloud Server 14.0.3 could give recipient the possibility to extend the expiration date of a share they received. | 4.3 |