CVE-2019-18426
Meta Platforms WhatsApp: Cross-Site Scripting
As of , CVE-2019-18426 in Meta Platforms WhatsApp is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 23 May 2022
- US federal deadline
- 13 June 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.68Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.08 on 23 May 2022EPSS on the day CISA listed it.
- Public exploit
- 1 Exploit-DB entry
- Fix
- No vendor link in CISA's entry
What CISA says to do
Apply updates per vendor instructions.
CISA's required action
What the flaw is
A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.
CISA's 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.
The CVE record's description, from facebook
- CVE published
- 21 January 2020
- Assigned by
- CVSS
- 8.2 High (CVSS 3.1, from CISA-ADP)
- CWE-79
- Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- no
- CISA SSVC, technical impact
- partial
Timeline
- The CVE record was published.
- Exploit-DB published an exploit (EDB-ID 48295).
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Public exploits
Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.
- Exploit-DB: WhatsApp Desktop 0.3.9308 - Persistent Cross-Site ScriptingEDB-ID 48295, 6 April 2020
WhatsApp: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2019-3568VOIP Stack Buffer Overflow | Meta Platforms WhatsApp | Patch soon | 0.30 | ||
| CVE-2025-55177Incorrect Authorization | Meta Platforms WhatsApp | Patch soon | 0.04 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org