CVE-2026-33511 | pyLoad up to 0.4.20/0.5.0b3.dev97 ClickNLoad Feature local_check authorization

VDB-352839 · CVE-2026-33511 · GCVE-0-2026-33511 PYLOAD UP TO 0.4.20/0.5.0B3.DEV97 CLICKNLOAD FEATURE LOCAL_CHECK AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 0.96+ Summaryinfo A vulnerability marked as critical has been reported in pyLoad up to 0.4.20/0.5.0b3.dev97. This vulnerability affects the function local_check of the component ClickNLoad Feature. Performing a manipulation results in authorization. This vulnerability is cataloged as CVE-2026-33511. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, was found in pyLoad up to 0.4.20/0.5.0b3.dev97. This affects the function local_check of the component ClickNLoad Feature. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is: pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to access localhost-restricted endpoints, enabling them to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code. This issue has been patched in version 0.5.0b3.dev97. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-33511 since 03/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 0.5.0b3.dev97 eliminates this vulnerability. Productinfo Name pyLoad Version 0.4.0 0.4.1 0.4.2 0.4.3 0.4.4 0.4.5 0.4.6 0.4.7 0.4.8 0.4.9 0.4.10 0.4.11 0.4.12 0.4.13 0.4.14 0.4.15 0.4.16 0.4.17 0.4.18 0.4.19 0.4.20 0.5.0b3.dev97 Website Product: https://github.com/pyload/pyload/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 7.0 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-639 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: pyLoad 0.5.0b3.dev97 Timelineinfo 03/20/2026 CVE reserved 03/24/2026 +4 days Advisory disclosed 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-33511 (🔒) GCVE (CVE): GCVE-0-2026-33511 GCVE (VulDB): GCVE-100-352839 Entryinfo Created: 03/24/2026 20:48 Changes: 03/24/2026 20:48 (66) Complete: 🔍 Cache ID: 99:D19:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸