CVE-2019-18426

HIGH8.2

CISA KEV

Published 2020-01-21 · Updated 2026-06-17 · Source cve-assign@fb.com

Summary

CVE-2019-18426 is a high-severity (CVSS 8.2) vulnerability in Meta Platforms WhatsApp. CISA added it to the Known Exploited Vulnerabilities catalog on May 23, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 13, 2022. CISA does not currently list it as used in ransomware campaigns. Meta Platforms has 3 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 3 known-exploited Meta Platforms vulnerabilities →

Description

A vulnerability in WhatsApp Desktop versions prior to 0.3.9309 when paired with WhatsApp for iPhone versions prior to 2.20.10 allows cross-site scripting and local file reading. Exploiting the vulnerability requires the victim to click a link preview from a specially crafted text message.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

CWE-79CWE-79

CISA Known-Exploited Vulnerability

Product: Meta Platforms — WhatsApp

Name: WhatsApp Cross-Site Scripting Vulnerability

Date added: 2022-05-23 · Due: 2022-06-13

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Meta Platforms vulnerabilities

Most recently added to CISA KEV

CVE-2025-55177
WhatsApp — Meta Platforms WhatsApp Incorrect Authorization Vulnerability
added 2025-09-02
CVE-2019-3568
WhatsApp — WhatsApp VOIP Stack Buffer Overflow Vulnerability
added 2022-04-19

View all →

Related CVEs

Same severity, most recent

CVE-2026-65960
Tetragon is an eBPF-based security observability and runtime enforcement project. Versions before 1.7.0 can use a Helm default that exposes the privileged Tetragon gRPC API through an unauthenticated TCP listener on localhost:54321. An attacker who can run or compromise same-node hostNetwork pods can reach the listener and invoke privileged methods without authentication. These methods can add, delete, or reconfigure tracing policies and change debug settings, potentially resulting in privilege escalation or container escape. Version 1.7.0 changes the default endpoint to a Unix-domain socket. Deployments that do not expose an unauthenticated TCP listener are not affected.
2026-11-06 · score 8.8
CVE-2026-33050
GeoNode is a geospatial content management system, a platform for the management and publication of geospatial data. Prior to 5.1.0, a crafted vector file layer name supplied during upload allows a low-privileged remote user to inject shell syntax and execute arbitrary operating-system commands on the GeoNode server. This issue is fixed in version 5.1.0.
2026-11-06 · score 8.8
CVE-2026-124040
CivetWeb through 1.16, when built with USE_HTTP2 and enable_http2 on, contains a use-after-free vulnerability in handle_http2() that retains freed :method and :path pointers. Unauthenticated remote attackers can send a later HEADERS frame omitting these pseudo-headers to influence request method or path seen by access rules, or crash the server.
2026-11-06 · score 8.1
CVE-2026-124027
ChatWiki before 2.10.0 contains a missing authentication vulnerability in the GET /manage/getLibRawFileOnePage route that allows unauthenticated attackers to read other tenants' documents. Attackers can enumerate sequential admin_user_id and file id query parameters, bypassing the ownership check, to retrieve PDF-rendered pages of any tenant's knowledge-base documents.
2026-11-06 · score 7.5
CVE-2026-123974
In all versions of PyTorch's TorchServe, a predictable extraction directory in /tmp lets a local user swap the model handler and run code as the TorchServe service account leading to local privilege escalation.
2026-11-06 · score 7.8