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Adobe ColdFusion CVE-2026-34633

| EUVDEUVD-2026-100672 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-10-13 psirt@adobe.com GHSA-7428-c27w-fq3f
7.7
CVSS 3.1 · Vendor: adobe
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Attack ChainAIDerived

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

  1. Access
    Authenticate with low-privileged ColdFusion account
  2. Delivery
    Submit crafted SSRF request
  3. Exploit
    Server proxies request to internal resource
  4. Execution
    Retrieve internal data or metadata credentials
  5. Impact
    Escalate access to internal systems

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 valid low-privileged authenticated account on the affected ColdFusion instance (CVSS PR:L); it is not exploitable by fully unauthenticated attackers. No user interaction is needed (UI:N) and the attack is network-reachable (AV:N) with low complexity (AC:L). The description does not name a specific feature or configuration toggle, implying the SSRF is reachable in default configurations of ColdFusion 2023 (≤2023.0.25) and ColdFusion 2025 (≤2025.0.13) once authenticated. The primary limiting factor is the authentication requirement, so real-world risk is highest where low-privileged ColdFusion accounts are widely provisioned or where the server is internet-facing and internal resources (e.g., cloud metadata services) are reachable from it.

Impact

This is a moderate-severity, authenticated SSRF (CWE-918) in Adobe ColdFusion with a vendor-assigned CVSS 3.1 base of 7.7 (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N). The vector signals network-reachable, low-complexity exploitation requiring a low-privileged account, with a changed scope and high confidentiality impact but no integrity or availability impact - consistent with an SSRF that pivots to read internal resources rather than achieving code execution. No EPSS score, CISA KEV listing, or public POC is present in the provided data, so there is no evidence of active exploitation or weaponization: this currently reads as a credible but not emergent priority. The main caveats are that the CVSS was supplied by Adobe PSIRT and not independently reproduced here, and that the PR:L requirement meaningfully limits blast radius - an attacker must first hold valid low-privileged credentials, so this is more relevant to environments where ColdFusion accounts are broadly provisioned or where credential theft is plausible. Prioritize patching on internet-facing ColdFusion where low-privileged accounts exist, but absent KEV/EPSS/POC signals this does not demand same-day emergency response.

Exploit ScenarioDerived

A low-privileged attacker with a valid ColdFusion account sends a crafted request that coerces the server into making attacker-controlled outbound requests, reaching internal-only services (cloud metadata endpoints, internal admin interfaces, or back-end APIs) that the attacker could not otherwise reach. Because scope is changed and confidentiality impact is high, the attacker reads sensitive internal data or obtains credentials/tokens enabling further privilege escalation. No public exploit code was identified at time of analysis, and no user interaction is required.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.7% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 13, 2026

Server-side request forgery in Adobe ColdFusion 2023 (up to and including 2023.0.25) and ColdFusion 2025 (up to and including 2025.0.13) allows a low-privileged authenticated attacker to make the ColdFusion server issue requests to internal or otherwise restricted resources, potentially escalating access and reading sensitive data. The vulnerability is rated CVSS 3.1 7.7 with scope changed and high confidentiality impact only; authentication as a low-privileged user is required (PR:L), no user interaction is needed, and no public exploit code was identified at time of analysis.

RemediationAI

Apply the vendor update identified in Adobe advisory apsb26-144 for ColdFusion 2023 and 2025; the supplied intelligence does not include an exact fixed build number, so verify the patched release against the advisory before upgrading. If immediate patching is not possible, reduce exposure by removing or restricting low-privileged ColdFusion accounts, since exploitation requires valid low-privileged authentication (PR:L), and by enforcing outbound network controls that prevent the ColdFusion server from reaching link-local/cloud metadata addresses such as 169.254.169.254 and internal management subnets. Monitor ColdFusion-originated outbound HTTP requests for unexpected internal destinations, and temporarily disable or restrict any ColdFusion feature that accepts user-controlled URLs until the update is applied. Trade-offs: egress filtering may break legitimate integrations, API callouts, or remote service checks; restricting accounts may reduce functionality for legitimate users; and URL-fetch restrictions must be tested so they do not disrupt approved workflows. Vendor advisory: https://www.adobe.com/trust/security/products/coldfusion/apsb26-144.html.

Affected VersionsENISA

ColdFusion 2025 0 ≤2025.0.13
ColdFusion 2023 0 ≤2023.0.25

Affected Packages

euvd coldfusion_2023 no fix
euvd coldfusion_2025 no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages 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) is the root cause: ColdFusion accepts input that influences an outbound request and fails to adequately validate or constrain the destination, letting the application server reach internal services, localhost, cloud instance metadata endpoints, or adjacent network resources on behalf of the attacker. The affected technology is the Adobe ColdFusion application server, with EUVD identifying ColdFusion 2023 versions up to 2023.0.25 and ColdFusion 2025 versions up to 2025.0.13. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N indicates a network-reachable, low-complexity attack that requires a valid low-privileged account, needs no victim interaction, and can affect resources beyond the vulnerable component's security scope (S:C) while exposing confidential information (C:H) without integrity or availability impact. The supplied description does not name a specific ColdFusion feature or configuration toggle, so defenders should treat the issue as reachable by authenticated users in default configurations until the vendor advisory clarifies exact conditions.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (adobe) PRIMARY 7.7 HIGH
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
vuln.today AI 7.7 HIGH

Network-reachable SSRF needing a low-privileged account (PR:L, AC:L, UI:N); scope changes as it reaches internal resources (S:C) exposing data (C:H) with no integrity/availability impact.

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

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

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

DescriptionCVE.org

ColdFusion is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain elevated access to internal resources. Exploitation of this issue does not require user interaction. Scope is changed.

Executive ViewAI

Why It Matters

Organizations using Adobe ColdFusion 2023 (up to 2023.0.25) and 2025 (up to 2025.0.13) face a high-severity server-side request forgery vulnerability that enables a low-privileged authenticated attacker to access internal or restricted resources and potentially read sensitive data. With no vendor patch available, this creates a significant risk of data exposure that could undermine customer trust and lead to regulatory consequences. Leadership should prioritize immediate mitigation and enhanced monitoring to protect critical information.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include network segmentation to restrict outbound traffic from ColdFusion servers, strict least-privilege enforcement for ColdFusion service accounts, WAF or IPS rules to block SSRF patterns, and continuous monitoring for unusual internal requests.

Threat Intelligence Overview

EPSS Score
0.7%
Top 47% exploitable
Prevalence
Medium
enterprise web app server, common in legacy/enterprise stacks but not everywhere
Data Quality
5 sources
Confidence: Medium

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 0.7%
Patch available No
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
No
Human Impact
High
Technical Impact
Total

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
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.

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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