CVE-2026-25873CRITICAL 9.8EPSS p60.7%

CVE-2026-25873CVE-2026-25873

Description

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS1.08% probability of exploitation · percentile 60.7% · 2026-06-19T12:03:05Z
Published2026-03-18
Last modified2026-03-19

Underlying weaknesses· 1

CWE-502

References

  1. https://arxiv.org/abs/2506.18871
  2. https://chocapikk.com/posts/2026/omnigen2-pickle-rce/
  3. https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L208
  4. https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L224
  5. https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_server.py#L118
  6. https://github.com/VectorSpaceLab/OmniGen2/pull/139
  7. https://www.vulncheck.com/advisories/omnigen2-rl-reward-server-unsafe-deserialization-rce

1

TypeTargetConfidenceTier
WeaknessDeserialization of Untrusted Datacwe-5020%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.