VulnerabilityPublished 5 Mar 2024Updated 27 Aug 2024

CVE-2024-27561: WonderCMS · Server-Side Request Forgery (SSRF)

Affects WonderCMSSource CVE Database V5

Not known to be exploited · CVSS 9.1 Critical.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

9.1Critical

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 47% 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:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
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: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 5 Mar 2024
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
GitHubwondercms/WonderCMS`pkg:github/wondercms/WonderCMS`Other threats	Affected =3.1.3	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-2024-27561, organizations should immediately restrict or disable the installUpdateThemePluginAction functionality if possible until a vendor patch is released. Implement strict input validation and sanitization on the installThemePlugin parameter to ensure only trusted, whitelisted URLs or local resources are accepted. Employ network-level controls such as egress filtering and firewall rules to prevent the CMS server from making arbitrary outbound HTTP requests, especially to internal IP ranges or sensitive endpoints. Use web application firewalls (WAFs) to detect and block suspicious SSRF patterns in HTTP requests. Monitor server logs and network traffic for unusual outbound connections originating from the CMS server. If feasible, isolate the CMS server in a segmented network zone with minimal access to internal resources. Stay updated with WonderCMS vendor advisories and apply official patches promptly once available. Conduct regular security assessments and penetration tests focusing on SSRF and related vulnerabilities in web applications.

Description

A Server-Side Request Forgery (SSRF) in the installUpdateThemePluginAction function of WonderCMS v3.1.3 allows attackers to force the application to make arbitrary requests via injection of crafted URLs into the installThemePlugin parameter.

Impact

The primary impact of CVE-2024-27561 is the potential for attackers to leverage the SSRF flaw to access internal network resources that are not directly exposed to the internet, such as internal APIs, databases, or cloud metadata services. This can lead to unauthorized disclosure of sensitive information, including credentials, configuration data, or private customer information. Additionally, attackers may manipulate internal services or escalate their privileges by exploiting trust relationships within the internal network. The integrity of the application and its data can be compromised if attackers use SSRF to perform unauthorized actions or inject malicious payloads. Although availability impact is not directly indicated, indirect denial-of-service conditions could arise if internal services are overwhelmed or manipulated. Organizations running WonderCMS 3.1.3 on public-facing servers are at significant risk, especially if their internal networks contain critical infrastructure. The ease of exploitation and lack of required authentication increase the likelihood of attacks, potentially leading to data breaches, compliance violations, and reputational damage.

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

github.com/zer0yu/CVE_Request/blob/master/WonderCMS/wondercms_installUpdateThemePluginAction_plugins.md (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 11:05 UTC

WeaknessesCWE-918

Technical details

References

Community reviews

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