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Secure Data Forms CVE-2026-102091

| EUVDEUVD-2026-90372 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-30 cisa-cg
7.5
CVSS 3.1 · Vendor: cisa-cg
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify internet-facing Secure Data Forms endpoint
  2. Delivery
    Submit request with attacker-controlled internal URL
  3. Exploit
    Server issues outbound request to internal service
  4. Execution
    Read back response from restricted resource
  5. Impact
    Enumerate internal hosts / exfiltrate internal data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires a reachable Kiteworks Secure Data Forms instance (version before 9.5.0) exposed to the attacker's network, and an internal service or network-restricted resource for the forged request to reach - the impact is proportional to what internal targets the server can reach (e.g., cloud metadata services, internal APIs, admin interfaces). No authentication is required (PR:N) and no user interaction (UI:N), so default-configured, internet-facing deployments are directly exploitable. The primary limiting factor is network positioning: the value depends on the SSRF being able to reach sensitive internal-only endpoints; a well-segmented deployment with strict egress filtering blunts the read-back capability.

Impact

The vendor CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N, 7.5) describes an unauthenticated, low-complexity, network-reachable SSRF requiring no user interaction - signals that normally warrant priority attention. However, real-world exploitation pressure is currently low: there is no CISA KEV listing, no EPSS score was provided, and no public exploit code was identified, so this is a genuine but not urgently-weaponized issue at time of analysis. NOTABLE CONFLICT: the vendor scored impact as C:N/I:H, yet the description explicitly states the attacker can 'read back the responses' from internal services, which is a confidentiality impact (C:H), not integrity - the vendor's I:H/C:N assignment appears misapplied and should be verified with Kiteworks. The net severity (~7.5) is roughly correct, but the impact dimension is mislabeled. Treat this as a real medium-to-high priority for internet-facing Kiteworks Secure Data Forms deployments because SSRF against unauthenticated endpoints is a common pivot toward internal recon and cloud metadata theft, while noting no evidence of active exploitation exists yet.

Exploit ScenarioDerived

An unauthenticated remote attacker sends a crafted request to an internet-facing Kiteworks Secure Data Forms endpoint containing an attacker-controlled URL, causing the server to issue an outbound request to an internal-only target (e.g., a cloud metadata endpoint at 169.254.169.254 or an internal admin service) and return the response body to the attacker. Because no authentication or user interaction is required (PR:N/UI:N) and complexity is low, the attacker can enumerate internal hosts and harvest data from network-restricted resources. No public proof-of-concept exploit was identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.5% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 30, 2026

Unauthenticated server-side request forgery (SSRF) in Kiteworks Secure Data Forms before 9.5.0 allows remote attackers to force the server to issue arbitrary outbound network requests and read back the responses, exposing internal-only services, cloud metadata endpoints, and other network-restricted resources. Exploitation requires no authentication (PR:N) and no user interaction (UI:N); our independent assessment rates it CVSS 3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N, reflecting the high confidentiality impact of reading internal responses rather than the vendor's C:N/I:H weighting. No public exploit code or confirmed active exploitation was identified at time of analysis.

RemediationAI

Vendor-released patch: 9.5.0 per the vendor advisory's affected-version statement (Secure Data Forms before 9.5.0); upgrade the Kiteworks platform and the Secure Data Forms module to 9.5.0 or later and verify the fixed build against GHSA-m8mj-m4fv-jmrh. Because the fix removes the unsafe outbound fetch behavior, no separate workaround is required once patched; however, if immediate upgrade is not possible, apply compensating controls by enforcing strict egress filtering on the Kiteworks appliance so outbound HTTP/HTTPS is permitted only to explicitly required destinations, and explicitly deny RFC1918 ranges, loopback, and the cloud metadata address 169.254.169.254 - the trade-off is that legitimate integrations using internal callbacks or non-allow-listed endpoints will break until they are added to the allow-list. Additionally, place the appliance in a network segment with no direct route to sensitive internal admin interfaces or control planes, and monitor outbound requests originating from Kiteworks processes for unexpected destinations; these controls reduce the read-back value of an SSRF but do not eliminate the vulnerability, so patching to 9.5.0 remains the primary remediation. No public exploit code or confirmed active exploitation was identified at time of analysis.

Affected VersionsENISA

Secure Data Forms 0 <9.5.0

Affected Packages

euvd secure_data_forms fix: 9.5.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

CWE-918 (Server-Side Request Forgery) occurs when a web application accepts a user-supplied URL or hostname and fetches it without validating that the destination is outside the trusted network. In Kiteworks Secure Data Forms, a module of the Kiteworks enterprise file-sharing and data-collection platform, the vulnerable code path is presumed to be a form-processing or callback feature that retrieves remote resources (e.g., URL-based imports, webhook deliveries, or preview generation) without enforcing an allow-list or blocking private/link-local ranges. The affected CPE is cpe:2.3:a:kiteworks:secure_data_forms:*:*:*:*:*:*:*:*, meaning all releases prior to 9.5.0 are in scope regardless of underlying platform build. Because the request originates from the Kiteworks server, the attacker inherits the appliance's network position, which may include cloud instance metadata endpoints (169.254.169.254), internal admin APIs, and segmented services that are not directly reachable from the internet. Our independent vector (C:H/I:L) treats the read-back of internal responses as the dominant confidentiality impact, whereas the vendor's submission emphasizes integrity impact; the discrepancy does not change the prerequisites (network reachability, no authentication, no user interaction) or the priority signal.

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Severity by source

Vendor (cisa-cg) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
vuln.today AI 8.2 HIGH

Unauthenticated network SSRF (PR:N/UI:N/AC:L); read-back of internal responses drives C:H, arbitrary outbound requests give limited I:L, no availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (cisa-cg).

CVSS VectorVendor: cisa-cg

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

Lifecycle Timeline

2
Patch available
Sep 30, 2026 - 21:04 EUVD
CVE Published
Sep 30, 2026 - 20:05 cve.org
HIGH 7.5

DescriptionCVE.org

Kiteworks Secure Data Forms before version 9.5.0 is vulnerable to Server-Side Request Forgery that could allow an unauthenticated, remote attacker to make the server issue arbitrary outbound network requests and read back the responses. This could potentially be used to reach internal-only services or other network-restricted resources.

Technical POC Analysis

Evidence caveat: the only supplied evidence is advisory GHSA-m8mj-m4fv-jmrh.

Full technical POC analysis - root cause, step-by-step exploitation and patch breakdown - is part of the Pro and Business plans.

Executive ViewAI

Why It Matters

Kiteworks Secure Data Forms deployments running versions before 9.5.0 are exposed to an unauthenticated server-side request forgery flaw that lets an outside attacker use the appliance itself to reach internal-only systems and cloud instance metadata, potentially returning sensitive content and credentials to the attacker. Because no credentials or user interaction are required, any internet-reachable instance is a viable target, and successful abuse of cloud metadata endpoints could enable lateral movement well beyond the file-transfer environment. Leadership should treat this as a priority exposure for the managed file transfer platform, which frequently sits adjacent to sensitive data repositories and internal networks.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: enforce outbound egress allow-listing from the Kiteworks application tier; block access to cloud instance metadata endpoints (169.254.169.254 and provider equivalents) and enforce IMDSv2-style metadata protections; network-segment the appliance away from internal management and data networks; apply WAF/IDP rules targeting SSRF request patterns; monitor and alert on anomalous outbound connections from the Kiteworks server; restrict internet exposure of the interface where operationally feasible. Validate remediation status and any vendor-supplied mitigation with Kiteworks directly.

Threat Intelligence Overview

EPSS Score
0.5%
Top 63% exploitable
Prevalence
Medium
Kiteworks is a common enterprise secure file-sharing/MFT platform, not ubiquitous
Data Quality
6 sources
Confidence: High

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.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.5%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
High
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

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