Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessGain man-in-the-middle network position
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DeliveryIntercept server's outbound HTTPS request
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ExploitPresent forged TLS certificate
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ExecutionUnvalidated cURL accepts malicious endpoint
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ImpactTamper 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. |
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Alert meAnalysisAIv1 – 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
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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
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
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.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
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
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.
What every action level means
SSVC AssessmentENISA
Priority Score
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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EUVD-2026-104207
GHSA-97qw-q7jv-r9q6
NVD
CVE.org
EPSS
Vulnrichment
VulDB
Exploit-DB