CVE-2026-33143 | oneuptime up to 10.0.33 webhook data authenticity (GHSA-g5ph-f57v-mwjc)

VDB-352133 · CVE-2026-33143 · GHSA-G5PH-F57V-MWJC ONEUPTIME UP TO 10.0.33 WEBHOOK DATA AUTHENTICITY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 1.39+ Summaryinfo A vulnerability was found in oneuptime up to 10.0.33. It has been classified as problematic. Affected by this issue is some unknown functionality of the file /notification/whatsapp/webhook. The manipulation leads to data authenticity. This vulnerability is listed as CVE-2026-33143. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended. Detailsinfo A vulnerability was found in oneuptime up to 10.0.33. It has been rated as problematic. This issue affects an unknown code block of the file /notification/whatsapp/webhook. The manipulation with an unknown input leads to a data authenticity vulnerability. Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is integrity. The summary by CVE is: OneUptime is a solution for monitoring and managing online services. Prior to version 10.0.34, the WhatsApp POST webhook handler (/notification/whatsapp/webhook) processes incoming status update events without verifying the Meta/WhatsApp X-Hub-Signature-256 HMAC signature, allowing any unauthenticated attacker to send forged webhook payloads that manipulate notification delivery status records, suppress alerts, and corrupt audit trails. The codebase already implements proper signature verification for Slack webhooks. This issue has been patched in version 10.0.34. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-33143 since 03/17/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. Upgrading to version 10.0.34 eliminates this vulnerability. Productinfo Name oneuptime Version 10.0.0 10.0.1 10.0.2 10.0.3 10.0.4 10.0.5 10.0.6 10.0.7 10.0.8 10.0.9 10.0.10 10.0.11 10.0.12 10.0.13 10.0.14 10.0.15 10.0.16 10.0.17 10.0.18 10.0.19 10.0.20 10.0.21 10.0.22 10.0.23 10.0.24 10.0.25 10.0.26 10.0.27 10.0.28 10.0.29 10.0.30 10.0.31 10.0.32 10.0.33 Website Product: https://github.com/OneUptime/oneuptime/ 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: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 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: Data authenticity CWE: CWE-345 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: oneuptime 10.0.34 Timelineinfo 03/17/2026 CVE reserved 03/20/2026 +3 days Advisory disclosed 03/20/2026 +0 days VulDB entry created 03/20/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-g5ph-f57v-mwjc Status: Confirmed CVE: CVE-2026-33143 (🔒) GCVE (CVE): GCVE-0-2026-33143 GCVE (VulDB): GCVE-100-352133 Entryinfo Created: 03/20/2026 23:31 Changes: 03/20/2026 23:31 (66) Complete: 🔍 Cache ID: 99:1A0:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸