Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-48063

Baileys has message upsert / hist sync spoofing and app state corruption when using maliciously crafted protocolMessage payload
Back to all
CVE

CVE-2026-48063

Baileys has message upsert / hist sync spoofing and app state corruption when using maliciously crafted protocolMessage payload

Baileys is a cocket-based TS/JavaScript API for WhatsApp Web. In versions prior to both 6.7.22 and 7.0.0-rc12, any Baileys session  can be sent a malicious payload via the placeholderResendMessage and trigger a fake messages.upsert event with a fake message key and payload. This allows anyone to spoof messages. The same exploit also allows an attacker to corrupt the app state sync system by sending fake key shares, and also allows for history sync spoofing which also serves the same problem, injecting fake previous context or "on-demand" sync. This issue has been fixed in versions 6.7.22 and 7.0.0-rc12.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48063.json, https://github.com/WhiskeySockets/Baileys/security/advisories/GHSA-qvv5-jq5g-4cgg, https://nvd.nist.gov/vuln/detail/CVE-2026-48063, https://github.com/WhiskeySockets/Baileys/commit/3beb08eecfcb4e65722e674034bd84fb11a9de35

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00157%
EPSS Percentile
0.05162%
Introduced Version
f0a40e2856d62882a11871ff8749fd51023f3eba
Fix Available
3beb08eecfcb4e65722e674034bd84fb11a9de35

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading