CVE-2026-25873: Beijing Academy of Artificial Intelligence (BAAI) OmniGen2-RL

OmniGen2-RL Reward Server Unsafe Deserialization RCE

CVSS 9.3 CriticalCriticalEPSS 0.011 · 67th percentile

Critical, because:

CVSS score 9.3: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 18 Mar 2026, 20:47 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
Beijing Academy of Artificial Intelligence (BAAI)	OmniGen2-RL pkg:github/VectorSpaceLab/OmniGen2	affected 0 Other versions: unknown

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
9.3	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
9.8	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.011, the 67th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

18 Mar 2026, 20:47 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/VectorSpaceLab/OmniGen2/pull/139 issue-trackingpatch
arxiv.org/abs/2506.18871 product
github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_server.py#L118 related
github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L208 related
github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L224 related
www.vulncheck.com/advisories/omnigen2-rl-reward-server-unsafe-deserialization-rce third-party-advisory
chocapikk.com/posts/2026/omnigen2-pickle-rce/ technical-descriptionexploit

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.