by Kastro
Paper/Archive/CVE-2026-25873

CVE-2026-25873

Beijing Academy of Artificial Intelligence (BAAI) OmniGen2-RL — OmniGen2-RL Reward Server Unsafe Deserialization RCE

EPSS 1%public exploitCVSS 9.8
critical.is priorityof 100
53
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 66.1.661 × 2013.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
OmniGen2-RLall versions–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/VectorSpaceLab/OmniGen2/pull/139exploitchocapikk.com/posts/2026/omnigen2-pickle-rcerefarxiv.org/abs/2506.18871refgithub.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_server.py#L118refgithub.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L208refgithub.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L224writeupvulncheck.com/advisories/omnigen2-rl-reward-server-unsafe-deserialization-rce