CVE-2020-15879 Server-side request forgery in n/a
Attackers can exploit insufficient IP validation in Bitwarden Server to access internal network resources via Server-Side Request Forgery.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-15879?
CVE-2020-15879 is a high-severity server-side request forgery vulnerability in n/a, published on 21 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Bitwarden Server 1.35.1 allows SSRF because it does not consider certain IPv6 addresses (ones beginning with fc, fd, fe, or ff, and the :: address) and certain IPv4 addresses (0.0.0.0/8, 127.0.0.0/8, and 169.254.0.0/16).
Weakness: CWE-918
Which versions are affected by CVE-2020-15879?
It affects 1 product.
Products include Bitwarden Server.
How do I fix CVE-2020-15879?
No fix has been published for CVE-2020-15879 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2020-15879 being exploited?
There is no known exploitation of CVE-2020-15879 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2026-60104 Bitwarden Server < 2026.6.0 Authorization Bypass via Admin Auth Request
- CVE-2026-43639 Bitwarden Server < 2026.4.0 Missing Authorization via Provider Clients
- CVE-2026-43640 Bitwarden Server < 2026.4.1 Authentication Bypass via SCIM API Key
- CVE-2019-19766 Weak cryptography in n/a
- CVE-2026-57520 Bitwarden Server < 2026.5.0 Privilege Escalation via Bulk User Remove Endpoint
Sources
Also known as GHSA-33r6-p8j2-7jxf.