VulnerabilityPublished 19 Mar 2026Updated 24 Mar 2026

CVE-2026-30404: wgcloud · Server-Side Request Forgery (SSRF)

Affects wgcloudSource CVE Database V5

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
GitHubtianshiyeben/wgcloud`pkg:github/tianshiyeben/wgcloud`Other threats	Affected =3.6.3	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2026-30404 effectively, organizations should take the following specific actions: 1) Immediately restrict network access to the wgcloud backend database management connection test feature, ideally limiting it to trusted internal IP addresses or VPNs to prevent external exploitation. 2) Implement strict network segmentation to isolate wgcloud servers from sensitive internal resources, minimizing the impact of SSRF-based internal reconnaissance. 3) Monitor outbound traffic from wgcloud servers for unusual or unauthorized requests, particularly to internal IP ranges or external domains, using network intrusion detection systems or firewall logs. 4) Disable or remove the vulnerable connection test feature if it is not essential for operations, reducing the attack surface. 5) Engage with wgcloud vendors or community to obtain patches or updates addressing the SSRF vulnerability as soon as they become available. 6) Conduct regular security assessments and penetration tests focusing on SSRF and related web application vulnerabilities within the environment. 7) Educate system administrators and security teams about the risks of SSRF and the importance of applying network-level controls. These targeted measures go beyond generic advice by focusing on access control, monitoring, and feature management specific to the vulnerability context.

Description

The backend database management connection test feature in wgcloud v3.6.3 has a server-side request forgery (SSRF) vulnerability. This issue can be exploited to make the server send requests to probe the internal network, remotely download malicious files, and perform other dangerous operations.

Impact

The primary impact of CVE-2026-30404 is the compromise of confidentiality within affected organizations. Attackers exploiting this SSRF vulnerability can probe internal network resources that are typically shielded from external access, potentially discovering sensitive services, databases, or management interfaces. This reconnaissance can facilitate subsequent attacks, including lateral movement or data exfiltration. The ability to remotely download malicious files through the SSRF vector raises the risk of further exploitation, such as remote code execution or malware deployment, which could escalate the severity beyond confidentiality loss. Since exploitation requires no authentication or user interaction, the attack surface is broad, increasing the likelihood of successful attacks against exposed wgcloud instances. Organizations relying on wgcloud for cloud or database management may face operational risks if internal resources are exposed or compromised. The absence of known exploits in the wild currently limits immediate widespread impact, but the vulnerability's characteristics suggest it could be weaponized quickly once exploit code becomes available. Overall, the threat poses a significant risk to organizations with exposed or poorly segmented wgcloud deployments, especially those managing sensitive or critical infrastructure.

CWE-918Server-Side Request Forgery (SSRF) (opens in a new tab)
Base weaknessCWE Top 25 (2025): #22OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
OWASP Cheat Sheets
Server Side Request Forgery Prevention (opens in a new tab)
Unvalidated Redirects and Forwards (opens in a new tab)
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V12.6.1 (opens in a new tab)
V5.2.6 (opens in a new tab)
Attack patterns
Server Side Request Forgery (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Mar 2026, 19:12 UTC

WeaknessesCWE-918

Technical details

References

Community reviews

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