CVE-2026-47160CWE-1389CWE-918

Vaultwarden: Server-side request forgery (SSRF) via Icon Endpoint Decimal/Hex/Octal IP Bypass

Medium · published July 15, 2026

CVSS v3.1
5.8
EPSS
0%
Percentile
32.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00397 · 32.9th percentile
Weaknesses
CWE-1389 · Incorrect Parsing of Numbers with Different Radices; CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-07-15T15:04Z
EPSS history
Timeline
  • 15 JUL 15:04Z
    Vaultwarden: Server-side request forgery (SSRF) via Icon Endpoint Decimal/Hex/Octal IP Bypass
    cvelistv5