CVE-2026-3632

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 51/100
Published: 2026-03-17 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Network Low Complexity

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Required
S: Unchanged
C: Low
I: Low
A: Low

Description

A flaw was found in libsoup, a library used by applications to send network requests. This vulnerability occurs because libsoup does not properly validate hostnames, allowing special characters to be injected into HTTP headers. A remote attacker could exploit this to perform HTTP smuggling, where they can send hidden, malicious requests alongside legitimate ones. In certain situations, this could lead to Server-Side Request Forgery (SSRF), enabling an attacker to force the server to make unauthorized requests to other internal or external systems. The impact is low, as SoupServer is not actually used in internet infrastructure.

Bug Bounty Relevance

51 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

EPSS — Exploitation Probability

0.25%
Raw Score 0.002490
Percentile 16.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00249
2026-11-12
0.00249
2026-11-10
0.00220
2026-11-09
0.00220
2026-11-08
0.00220
2026-11-07
0.00220
2026-11-06
0.00220

Intelligence Sources

mitre ref →
nvd ref →