CVE-2026-33399 | ellite Wallos up to 4.6.x Notifications validate_webhook_url_for_ssrf server-side request forgery

VDB-352829 · CVE-2026-33399 · GCVE-0-2026-33399 ELLITE WALLOS UP TO 4.6.X NOTIFICATIONS VALIDATE_WEBHOOK_URL_FOR_SSRF SERVER-SIDE REQUEST FORGERY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.8 $0-$5k 3.27+ Summaryinfo A vulnerability, which was classified as critical, has been found in ellite Wallos up to 4.6.x. This issue affects the function validate_webhook_url_for_ssrf of the component Notifications Handler. The manipulation leads to server-side request forgery. This vulnerability is traded as CVE-2026-33399. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, has been found in ellite Wallos up to 4.6.x. This issue affects the function validate_webhook_url_for_ssrf of the component Notifications Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is: Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the SSRF fix applied in version 4.6.2 for CVE-2026-30839 and CVE-2026-30840 is incomplete. The validate_webhook_url_for_ssrf() protection was added to the test* notification endpoints but not to the corresponding save* endpoints. An authenticated user can save an internal/private IP address as a notification URL, and when the cron job sendnotifications.php executes, the request is sent to the internal IP without any SSRF validation. This issue has been patched in version 4.7.0. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-33399 since 03/19/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. Upgrading to version 4.7.0 eliminates this vulnerability. Productinfo Vendor ellite Name Wallos Version 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Website Product: https://github.com/ellite/Wallos/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.0 VulDB Meta Temp Score: 6.8 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.7 CNA Vector (GitHub_M): 🔒 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: Server-side request forgery CWE: CWE-918 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: Wallos 4.7.0 Timelineinfo 03/19/2026 CVE reserved 03/24/2026 +5 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-2026-33399 (🔒) GCVE (CVE): GCVE-0-2026-33399 GCVE (VulDB): GCVE-100-352829 Entryinfo Created: 03/24/2026 19:08 Changes: 03/24/2026 19:08 (65) Complete: 🔍 Cache ID: 99:127:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸