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Kameleo CVE-2026-116283

| EUVDEUVD-2026-109832 MEDIUM
Information Exposure (CWE-200)
2026-10-26 VulDB GHSA-rq8q-32wq-4xr7
5.3
CVSS 4.0 · Vendor: VulDB
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Attack ChainAIDerived

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

  1. Access
    Lure user to attacker-controlled page
  2. Exploit
    Trigger request to local /profiles API
  3. Execution
    Local API returns profile data
  4. Impact
    Attacker harvests disclosed information

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

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

Exploitation Conditions

Requires a vulnerable Kameleo installation (up to 5.0.1.26) that is running with its Local API component active and the /profiles endpoint reachable by the attacker's request path. The CVSS vector's UI:P indicates a victim-side action is needed (consistent with a browser/cross-origin request reaching the local API), and PR:N indicates no authentication is required. Limiting factors: Kameleo and its Local API must be running at exploitation time, the target must be on an affected version, and user interaction is required - reducing this to opportunistic rather than mass remote exploitation. The exact mechanism by which /profiles leaks data is not described in the available sources; impact is limited to confidentiality (VC:L), with the likely exposed content being profile data such as stored proxy passwords (inferred from the 5.2.0 security note, not confirmed for this CVE).

Impact

Signals point to a moderate, plan-and-patch issue rather than an urgent one. The input CVSS 4.0 base is 5.3 (medium) with AV:N/AC:L/PR:N/UI:P and only low confidentiality impact (VC:L, no integrity/availability effect). No EPSS score is provided and the flaw is NOT in CISA KEV, so there is no evidence of active exploitation. A public PoC reference exists (a Google Drive link in the VulDB submission) but it is not verified as working exploit code, so POC availability must not be read as exploitation. The vuln.today decision label is 'this_month', consistent with medium severity and no confirmed in-the-wild use. One signal conflict must be flagged: the affected component is the 'Local API' (which normally binds to loopback/localhost) yet the description claims the attack is 'possible to be carried out remotely' - this is most plausibly a browser-driven cross-origin request to the local API (consistent with UI:P requiring a victim action) rather than direct internet-facing exposure; verify the listening interface and CORS behavior with the vendor before rating it as truly network-reachable. Net: a real but non-emergency credential/information disclosure in a niche product - schedule the 5.2.0 upgrade this month.

Exploit ScenarioDerived

A victim running a vulnerable Kameleo build (≤5.0.1.26) with the Local API active is induced to perform an action (UI:P) - most plausibly visiting a malicious web page that issues a request to the local /profiles endpoint - which returns profile data, potentially including sensitive fields such as stored proxy credentials. The attack needs no authentication (PR:N) and is low complexity (AC:L). A public PoC reference exists but it is not verified as working exploit code, and there is no confirmed active exploitation.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 26, 2026

Information disclosure in the Local API of Kameleo (versions up to and including 5.0.1.26) lets a remote, unauthenticated attacker read data exposed by the /profiles endpoint, with the assessed CVSS 3.1 score of 5.3 reflecting confidentiality-only impact (C:L) and a required victim-side action (UI:R). Exploitation is opportunistic rather than mass-scale: Kameleo must be running with its Local API reachable along the attacker's request path, and the exact mechanism by which /profiles leaks data is not described in the available sources. The vendor addressed the issue in release 5.2.0, whose security note states that proxy passwords are now redacted in API responses; no confirmed active exploitation (CISA KEV) or verified public exploit code was identified at time of analysis, and the vulnerability is triaged as a plan-and-patch item rather than an emergency.

RemediationAI

Upgrade Kameleo to version 5.2.0, which the vendor states mitigates the issue and which ships the security change 'Display a redacted proxy password on the API responses'; the release is available at https://github.com/kameleo-io/kameleo/releases/tag/5.2.0, and the VulDB entry at https://vuldb.com/vuln/426308 plus the CVE.org record at https://vuldb.com/cve/CVE-2026-116283 should be consulted for the vendor's own wording. Because the exposure is through the Local API rather than an internet-facing service, interim reduction of blast radius centers on keeping that API bound to loopback and never exposing or port-forwarding it to untrusted networks, and shutting the Local API and application down when automation is not in use - the trade-off being that the SDK and automation integrations stop working while the API is disabled. Rotating any proxy credentials or other secrets that were configured in profiles on affected installations is prudent given the confidentiality-only impact and the redaction fix in 5.2.0, since previously returned values may already have been captured. Per the supplied data a patch is available from the vendor, so no further unverified workaround should be treated as equivalent to upgrading.

Affected VersionsENISA

Kameleo 5.0.1.12
Kameleo 5.0.1.11
Kameleo 5.0.1.16
Kameleo 5.0.1.5
Kameleo 5.0.1.26
Kameleo 5.0.1.21
Kameleo 5.0.1.7
Kameleo 5.0.1.4
Kameleo 5.0.1.19
Kameleo 5.0.1.6
Kameleo 5.0.1.9
Kameleo 5.0.1.20
Kameleo 5.0.1.23
Kameleo 5.0.1.25
Kameleo 5.0.1.8
Kameleo 5.0.1.24
Kameleo 5.0.1.2
Kameleo 5.0.1.18
Kameleo 5.0.1.13
Kameleo 5.0.1.10
Kameleo 5.0.1.1
Kameleo 5.0.1.0
Kameleo 5.0.1.3
Kameleo 5.0.1.17
Kameleo 5.0.1.22
Kameleo 5.0.1.15
Kameleo 5.0.1.14

Affected Packages

euvd kameleo no fix

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

Kameleo is an anti-detect browser platform that manages isolated browser profiles and exposes a Local API consumed by its SDKs (Playwright, Puppeteer, Selenium integrations) so automation code can launch, configure and query profiles. The flaw is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and is reachable through the /profiles endpoint of that Local API; the CVSS 4.0 vector supplied (AV:N/AC:L/AT:N/PR:N/UI:P) and the independent CVSS 3.1 assessment (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) agree that no privileges are required but that a victim-side interaction is needed to deliver the request, which is consistent with a browser or cross-origin request being steered at the locally listening API rather than a direct internet-facing service being attacked. Impact is confined to confidentiality - integrity and availability are unaffected, and the scope is unchanged. The precise trigger and the exact fields returned are not described in the available sources; the 5.2.0 release note that proxy passwords are now redacted in API responses is the strongest available hint that credential material (for example configured proxy passwords) was among the exposed values, but that link is inferred from the release notes and is not confirmed for this CVE. The affected CPE is recorded as a version-agnostic wildcard (cpe:2.3:a:n/a:kameleo:*:*:*:*:*:*:*:*), so version scoping rests on the vendor-derived statement of 'up to 5.0.1.26' rather than on CPE granularity.

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Severity by source

Vendor (VulDB) PRIMARY 5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
vuln.today AI 4.3 MEDIUM

Browser-reachable local API request needs victim action (UI:R) and no auth (PR:N); only low confidentiality impact, no integrity or availability effect.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

A weakness has been identified in Kameleo up to 5.0.1.26. This affects an unknown part of the file /profiles of the component Local API. This manipulation causes information disclosure. The attack is possible to be carried out remotely. Upgrading to version 5.2.0 is able to mitigate this issue. Upgrading the affected component is advised.

Threat Intelligence Overview

EPSS Score
0.3%
Top 79% exploitable
Prevalence
Low
niche anti-detect browser, specialized and limited user base
Social Media
1
Sightings
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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