Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's /icons/{domain}/icon.png endpoint used src/http_client.rs checks including should_block_address() and post_resolve() that missed decimal, hexadecimal, and octal IP representations, allowing SSRF through the icon-fetching HTTP client for blind internal network or port discovery. This issue is fixed in version 1.36.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/dani-garcia/vaultwarden/commit/a354e57659d26149fde0d91b76f83…
security-advisories@github.com
https://github.com/dani-garcia/vaultwarden/pull/7162
security-advisories@github.com
https://github.com/dani-garcia/vaultwarden/releases/tag/1.36.0
security-advisories@github.com
https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-72vh-x5jq-m…
security-advisories@github.com