EUVD-2026-12559Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V14 - Configuration Dependency management, component inventory
|
| Impact | Access to internal services, cloud metadata endpoints, or other resources not intended to be publicly accessible. Can lead to data exfiltration or further exploitation. With a CVSS score of 3.9 (LOW), this represents a low risk. |
| Exploit ScenarioDerived | An attacker provides a URL pointing to an internal service (e.g., http://169.254.169.254/latest/meta-data/) through a vulnerable parameter, causing the server to fetch and return internal data. |
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Alert meAnalysisAIv1 – Mar 17, 2026
A flaw was found in libsoup, a library used by applications to send network requests.
Earlier versions of this analysis (1)
RemediationAI
Validate and whitelist allowed URLs and IP ranges. Block requests to internal/private IP ranges. Use network segmentation to limit server-side request scope.
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Technical ContextAI · show details
Server-Side Request Forgery allows an attacker to induce the server to make HTTP requests to arbitrary destinations, including internal services.
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Severity by source
AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
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.
Executive ViewAI
CVE-2026-3632 is a low-severity vulnerability in A flaw (CVSS 3.9). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation. Apply vendor updates when available as part of routine maintenance.
Apply vendor patch during routine maintenance. Standard security controls provide adequate interim protection.
Threat Intelligence Overview
NVD
CVE.org
EPSS
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.
Affected Products (CPE)CVE.org
Related Vulnerabilities in libsoup HTTP Protocol Flaws
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Vendor StatusVendor
Ubuntu
Priority: Medium| Release | Status | Version |
|---|---|---|
| upstream | needs-triage | - |
| bionic | deferred | 2026-03-11 |
| focal | deferred | 2026-03-11 |
| jammy | deferred | 2026-03-11 |
| noble | deferred | 2026-03-11 |
| questing | deferred | 2026-03-11 |
| xenial | deferred | 2026-03-11 |
| Release | Status | Version |
|---|---|---|
| upstream | needs-triage | - |
| jammy | deferred | 2026-03-11 |
| noble | deferred | 2026-03-11 |
| questing | deferred | 2026-03-11 |
Debian
Bug #1130499| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | vulnerable | 2.72.0-2 | - |
| bullseye (security) | vulnerable | 2.72.0-2+deb11u3 | - |
| bookworm | vulnerable | 2.74.3-1+deb12u1 | - |
| trixie | vulnerable | 2.74.3-10.1 | - |
| (unstable) | fixed | (unfixed) | - |
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bookworm | vulnerable | 3.2.3-0+deb12u2 | - |
| trixie | vulnerable | 3.6.5-3 | - |
| forky, sid | vulnerable | 3.6.6-1 | - |
| (unstable) | fixed | (unfixed) | - |
GitHub PoC
Exploit-DB