CVE-2026-32859

ByteDance DeerFlow Stored XSS via Inline Artifact Rendering

MEDIUM
5.4
CVSS Score
Published: March 27, 2026 at 01:41 PM UTC
Updated: October 26, 2026 at 09:10 PM UTC
1 product affected across 1 vendorDeerFlow

Using DeerFlow by Bytedance Inc.?

Get instant alerts when new vulnerabilities affect DeerFlow - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

ByteDance Deer-Flow versions prior to commit 5dbb362 contain a stored cross-site scripting vulnerability in the artifacts API that allows attackers to execute arbitrary scripts by uploading malicious HTML or script content as artifacts. Attackers can store malicious content that executes in the browser context when users view artifacts, leading to session compromise, credential theft, and arbitrary script execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5dbb3623b2f0e490c8bb3cd81b1e3b1b12eae1a6

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card