VulnerabilityPublished 1 Dec 2025Updated 2 Dec 2025

CVE-2025-65836: PublicCMS · Server-Side Request Forgery (SSRF)

Source CVE Database V5

Not known to be exploited · CVSS 9.1 Critical.

Data as of 26 Oct 2026, 16:39 UTC

CVSS 3.1 base score

9.1Critical

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 25% 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 1 Dec 2025
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

AI-suggested

Immediate mitigation should focus on network-level controls and application hardening. Organizations should implement strict egress filtering to restrict outbound HTTP requests from the PublicCMS server to only trusted destinations, effectively limiting SSRF exploitation scope. Web application firewalls (WAFs) should be configured to detect and block suspicious request patterns targeting the chat interface. Input validation and sanitization should be enhanced to prevent malicious payloads from triggering SSRF. Until an official patch is released, consider disabling or restricting access to the SimpleAiAdminController chat interface if feasible. Continuous monitoring and logging of outbound requests from the CMS server can help detect exploitation attempts early. Network segmentation should be enforced to isolate the CMS server from sensitive internal services. Organizations should also prepare incident response plans specific to SSRF exploitation scenarios. Once a patch becomes available, prompt testing and deployment are critical. Vendor engagement to obtain timely updates and security advisories is recommended. Finally, conducting security assessments and penetration tests focusing on SSRF vectors can help identify residual risks.

Description

PublicCMS V5.202506.b is vulnerable to SSRF.in the chat interface of SimpleAiAdminController.

Impact

For European organizations, the impact of CVE-2025-65836 can be significant, especially for those relying on PublicCMS for web content management and internal communication tools. Successful exploitation can lead to unauthorized access to internal network resources, potentially exposing sensitive corporate data, intellectual property, or personal data protected under GDPR. The integrity of internal systems could be compromised, allowing attackers to manipulate data or pivot to other critical infrastructure components. Although availability is not directly impacted, the breach of confidentiality and integrity can result in regulatory penalties, reputational damage, and operational disruptions. Organizations in sectors such as finance, healthcare, government, and critical infrastructure that use PublicCMS are particularly at risk. The vulnerability's ease of exploitation without authentication increases the likelihood of automated scanning and attacks, raising the threat level across Europe. Additionally, attackers could leverage SSRF to bypass network segmentation and access otherwise protected internal services, amplifying the potential 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

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 8 Dec 2025, 21:10 UTC

WeaknessesCWE-918

Technical details

References

Community reviews

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