Vulnerability-Lookup

GHSA-38H5-7G7P-55VV

Vulnerability from github – Published: 2026-03-18 21:32 – Updated: 2026-03-18 21:32

Details

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.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-25873"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-18T21:16:25Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-38h5-7g7p-55vv",
  "modified": "2026-03-18T21:32:59Z",
  "published": "2026-03-18T21:32:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25873"
    },
    {
      "type": "WEB",
      "url": "https://github.com/VectorSpaceLab/OmniGen2/pull/139"
    },
    {
      "type": "WEB",
      "url": "https://arxiv.org/abs/2506.18871"
    },
    {
      "type": "WEB",
      "url": "https://chocapikk.com/posts/2026/omnigen2-pickle-rce"
    },
    {
      "type": "WEB",
      "url": "https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L208"
    },
    {
      "type": "WEB",
      "url": "https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L224"
    },
    {
      "type": "WEB",
      "url": "https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_server.py#L118"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/omnigen2-rl-reward-server-unsafe-deserialization-rce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-25873 (GCVE-0-2026-25873)

Vulnerability from cvelistv5 – Published: 2026-03-18 20:47 – Updated: 2026-03-19 15:43

Title

OmniGen2-RL Reward Server Unsafe Deserialization RCE

Summary

Severity

9.3 (Critical)


                        
                          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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

VulnCheck

References

7 references

URL	Tags
https://github.com/VectorSpaceLab/OmniGen2/pull/139	patch
https://chocapikk.com/posts/2026/omnigen2-pickle-rce/	technical-descriptionexploit
https://arxiv.org/abs/2506.18871	product
https://github.com/VectorSpaceLab/OmniGen2/blob/3…	related
https://github.com/VectorSpaceLab/OmniGen2/blob/3…	related
https://github.com/VectorSpaceLab/OmniGen2/blob/3…	related
https://www.vulncheck.com/advisories/omnigen2-rl-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Beijing Academy of Artificial Intelligence (BAAI)	OmniGen2-RL	Affected: 0

Credits

Valentin Lobstein (Chocapikk)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-38H5-7G7P-55VV

CVE-2026-25873 (GCVE-0-2026-25873)

Tags

Sightings

Nomenclature