Dashboard / CVE-2026-23866

CVE-2026-23866

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 59/100
Published: 2026-05-01 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: Low
I: None
A: None

Description

Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.15.72 and WhatsApp for Android v2.25.8.0 to v2.26.7.10 could have allowed a user to trigger processing of media content from an arbitrary URL on another user’s device, including triggering OS-controlled custom URL scheme handlers. We have not seen evidence of exploitation in the wild.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
whatsapp whatsapp 2.25.8.0 – 2.26.7.10
whatsapp whatsapp 2.25.8.0 – 2.26.15.72

References & Advisories (2)

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

4.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploitation Probability

0.47%
Raw Score 0.004710
Percentile 40.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00471
2026-10-28
0.00471

Intelligence Sources

nvd ref →

External Links