CVE-2026-32859: Bytedance Inc. DeerFlow

ByteDance DeerFlow Stored XSS via Inline Artifact Rendering

CVSS 5.1 MediumEPSS 0.0020 · 9th percentile

Published by the CVE Program (CNA: VulnCheck) at 27 Mar 2026, 13:41 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Bytedance Inc.	DeerFlow pkg:github/bytedance/deer-flow	affected before 5dbb3623b2f0e490c8bb3cd81b1e3b1b12eae1a6 git Other versions: unaffected

Identifiers

CVE-2026-32859

CNA

VulnCheck

Weakness (CWE)

CWE-79

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.1	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N	CNA (VulnCheck)Used for this record
5.4	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0020, the 9th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

27 Mar 2026, 13:41 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/bytedance/deer-flow/pull/1389 issue-trackingpatch
github.com/bytedance/deer-flow/commit/5dbb3623b2f0e490c8bb3cd81b1e3b1b12eae1a6 patch
www.vulncheck.com/advisories/bytedance-deerflow-stored-xss-via-inline-artifact-rendering third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.