Deserialization in Beijing Academy Of Artificial Intelligence (Baai) Omnigen2-Rl
CVE-2026-25873
OmniGen2-RL contains an unauthenticated remote code execution vulnerability in the reward server component that allows remote attackers to execute arbitrary commands by sending malicious HTTP POST requests. Attackers can exploit insecure pickle deserialization of request bodies to achieve code execution on the host system running the exposed service.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.015 · change: +0.005
Affected products
Weakness classification (CWE)
References
- github.com/VectorSpaceLab/OmniGen2/pull/139 (issue-tracking, patch)
- chocapikk.com/posts/2026/omnigen2-pickle-rce/ (technical-description, exploit)
- arxiv.org/abs/2506.18871 (product)
- github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c… (related)
- github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c… (related)
- github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c… (related)
- www.vulncheck.com/advisories/omnigen2-rl-reward-server-unsafe-deserialization-r… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-25873?
- CVE-2026-25873 is a critical-severity vulnerability in Beijing Academy Of Artificial Intelligence (Baai) Omnigen2-Rl, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-03-18.
- How severe is CVE-2026-25873?
- Critical severity. CVSS v3 base score is 9.8 out of 10.