CVE-2025-11655VulnerabilityPublished 13 Oct 2025Updated 14 Oct 2025

CVE-2025-11655: Total.js Flow · Unrestricted Upload

Affects Total.js FlowSource CVE Database V5

Not known to be exploited · CVSS 5.1 Medium.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 4.0 base score

5.1Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: High
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: High: The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 Oct 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 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

1. Immediately restrict or disable the SVG File Handler upload functionality if not essential. 2. Implement strict server-side validation of uploaded files, including file type, size, and content inspection, to prevent malicious uploads. 3. Employ allow-listing for permitted file extensions and reject all others. 4. Use sandboxing or isolated environments for handling uploaded files to limit potential damage. 5. Monitor logs and network traffic for unusual upload activity or access patterns indicative of exploitation attempts. 6. Apply web application firewalls (WAF) with custom rules to detect and block suspicious upload requests targeting the SVG File Handler. 7. Maintain up-to-date backups and incident response plans to quickly recover from potential compromises. 8. Engage with the Total.js community or monitor official channels for patches or updates addressing this vulnerability. 9. Conduct internal code reviews and penetration testing focusing on file upload components to identify and remediate similar weaknesses. 10. Educate development and operations teams about the risks of unrestricted file uploads and secure coding practices.

Description

A security flaw has been discovered in Total.js Flow up to 673ef9144dd25d4f4fd4fdfda5af27f230198924. The impacted element is an unknown function of the component SVG File Handler. Performing manipulation results in unrestricted upload. The attack can be initiated remotely. The exploit has been released to the public and may be exploited. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations, the unrestricted upload vulnerability in Total.js Flow could lead to unauthorized file uploads that compromise server integrity and confidentiality. Attackers could deploy web shells or malware, enabling further lateral movement or data exfiltration. Organizations using Total.js Flow in web applications, especially those handling SVG files or other user-uploaded content, face increased risk of compromise. This could impact sectors with sensitive data such as finance, healthcare, and government. The continuous delivery model complicates patch management, potentially delaying remediation. Additionally, the lack of vendor response may hinder coordinated vulnerability management. The impact on availability is limited but possible if attackers upload files that disrupt service or consume resources. European entities with web infrastructure built on Node.js frameworks or using Total.js Flow components are particularly vulnerable. The medium severity suggests a moderate risk, but exploitation ease and public exploit availability elevate the threat level, necessitating proactive defense measures.

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 21 Oct 2025, 00:48 UTC

Technical details

References

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