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TikTok Video Downloader EUVDEUVD-2026-104207

| CVE-2026-112106 MEDIUM
Improper Certificate Validation (CWE-295)
2026-10-19 VulDB GHSA-97qw-q7jv-r9q6
6.3
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
    Gain man-in-the-middle network position
  2. Delivery
    Intercept server's outbound HTTPS request
  3. Exploit
    Present forged TLS certificate
  4. Execution
    Unvalidated cURL accepts malicious endpoint
  5. Impact
    Tamper with returned video/download data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V12 - Secure Communication Certificate validation
Exploitation Conditions

Exploitation requires the attacker to hold an active man-in-the-middle position on the network path between the server running TikTok-Video-Downloader-PHP and the remote HTTPS endpoints it contacts (TikTok APIs/CDN). The vulnerable condition is default behavior in affected revisions: index.php issues cURL requests with CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST both disabled, so any forged or invalid certificate is accepted without a configuration change. Limiting factors: no user interaction or authentication is needed (PR:N/UI:N), but the MITM prerequisite makes the attack high-complexity (AC:H) and opportunistic rather than widely exploitable; impact is confined to integrity of the fetched upstream data, with no confidentiality or availability effect per the vendor vector.

Impact

This is a genuine but low-priority defect. The source-code evidence confirms the root cause unambiguously: four cURL call sites in index.php set CURLOPT_SSL_VERIFYHOST and CURLOPT_SSL_VERIFYPEER to false, disabling TLS certificate validation (CWE-295). The vendor's CVSS 4.0 vector (6.3) scores AV:N/AC:H/AT:N/PR:N/UI:N with only VI:L and no confidentiality or availability impact, which is consistent with a man-in-the-middle integrity issue rather than direct code execution. The AC:H rating and the description's explicit note that 'exploitation is known to be difficult' reflect the real-world precondition: an attacker must already occupy a privileged network position between the server and TikTok's endpoints. There is no EPSS score, no CISA KEV listing, and no public exploit code referenced in the input - exploitation status is therefore 'no public exploit identified at time of analysis.' The 'Information Disclosure' tag mildly conflicts with the vendor vector (VC:N, i.e., no confidentiality impact scored), but this is a severity-interpretation nuance, not a confirmed exploitation signal. Net: a real, patch-worthy flaw with low realistic risk because exploitation requires MITM positioning and yields only limited integrity impact.

Exploit ScenarioDerived

An attacker positioned on the network path between the vulnerable server and the upstream TikTok/CDN endpoints (e.g., a malicious Wi-Fi hop, compromised router, or DNS/ARP spoofing) presents a forged TLS certificate. Because the application disables peer and host verification in its cURL requests, the forged certificate is accepted, letting the attacker intercept or tamper with the fetched video content and metadata. No public exploit code is identified in the provided data, and the attack requires high complexity due to the needed MITM position.

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 19, 2026

Improper TLS certificate validation in TikTok Video Downloader PHP allows unauthenticated remote attackers who already hold a man-in-the-middle position to supply forged HTTPS certificates to index.php cURL requests, compromising the integrity of data fetched from TikTok APIs and CDN endpoints. The issue affects rolling-release revisions up to commit c4230497bb23dd9c1f81456fe8a982d951feac0d and is fixed by commit 64c0155abb88e714198241d41b918cefc0d5a42a; exploitation requires a MITM position, and no public exploit code was identified at time of analysis. Impact is limited to integrity (CVSS 6.3, high attack complexity) with no confidentiality or availability effect.

RemediationAI

Apply the upstream fix in commit 64c0155abb88e714198241d41b918cefc0d5a42a (or later), which sets CURLOPT_SSL_VERIFYPEER => true and CURLOPT_SSL_VERIFYHOST => 2 in index.php; because the project uses rolling releases, no patched version number is available. Upstream fix available (PR/commit); released patched version not independently confirmed. Track the vendor issue at https://github.com/TufayelLUS/TikTok-Video-Downloader-PHP/issues/55. If immediate patching is not possible, restrict outbound HTTPS from the PHP host to an allowlist of required TikTok API/CDN endpoints to reduce MITM exposure, and do not override TLS verification back to disabled values; these controls reduce but do not eliminate risk and can break functionality if legitimate endpoints change.

Affected VersionsENISA

TikTok-Video-Downloader-PHP c4230497bb23dd9c1f81456fe8a982d951feac0d

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Technical ContextAI · show details

The affected PHP application uses cURL to retrieve TikTok content and keys, but index.php configured CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST as false, disabling verification of the server certificate chain and hostname. This is CWE-295 (Improper Certificate Validation): any certificate, including a forged one, is accepted, so an attacker positioned on the network path between the PHP server and TikTok endpoints can impersonate those endpoints and alter fetched data. The CPE cpe:2.3:a:tufayellus:tiktok-video-downloader-php:*:*:*:*:*:*:*:* reflects a wildcard version because the project uses rolling releases; the fixing commit changes the four cURL configurations in index.php (downloadVideo, getContent, getKey, getDownloadableLink) to CURLOPT_SSL_VERIFYPEER => true and CURLOPT_SSL_VERIFYHOST => 2. The prerequisite is an active MITM position, making the attack high-complexity and opportunistic, with integrity-only impact per the assessed vector.

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Severity by source

Vendor (VulDB) PRIMARY 6.3 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
vuln.today AI 3.7 LOW

MITM position needed so AC:H; no auth or interaction (PR:N/UI:N); impact limited to tampering with fetched data, hence I:L with C:N and A:N.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

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

DescriptionCVE.org

A security vulnerability has been detected in TufayelLUS TikTok-Video-Downloader-PHP up to c4230497bb23dd9c1f81456fe8a982d951feac0d. Affected by this issue is some unknown functionality of the file index.php of the component TLS Handler. Such manipulation leads to improper certificate validation. It is possible to launch the attack remotely. The attack requires a high level of complexity. The exploitation is known to be difficult. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The name of the patch is 64c0155abb88e714198241d41b918cefc0d5a42a. It is advisable to implement a patch to correct this issue.

Threat Intelligence Overview

EPSS Score
0.3%
Top 81% exploitable
Prevalence
Rare
obscure open-source hobby PHP project, negligible enterprise footprint
Data Quality
7 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment CIRCL GitHub VulDB

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
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
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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