CVE-2026-25873

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-18. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
64%
KEV
Not listed

Published

March 18, 2026

Last Modified

July 28, 2026

Advisory Details (7)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: github_pr.
generic

OmniGen2-RL Reward Server Unsafe Deserialization RCE | Advisories | VulnCheck

https://www.vulncheck.com/advisories/omnigen2-rl-reward-server-unsafe-deserialization-rce
generic

OmniGen2/OmniGen2-RL/reward_server/reward_proxy.py at 3a13017e532f9f309a38bca571fd62200a6415c5 · VectorSpaceLab/OmniGen2 · GitHub

https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L224
generic

OmniGen2/OmniGen2-RL/reward_server/reward_proxy.py at 3a13017e532f9f309a38bca571fd62200a6415c5 · VectorSpaceLab/OmniGen2 · GitHub

https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_proxy.py#L208
generic

OmniGen2/OmniGen2-RL/reward_server/reward_server.py at 3a13017e532f9f309a38bca571fd62200a6415c5 · VectorSpaceLab/OmniGen2 · GitHub

https://github.com/VectorSpaceLab/OmniGen2/blob/3a13017e532f9f309a38bca571fd62200a6415c5/OmniGen2-RL/reward_server/reward_server.py#L118
generic

[2506.18871] OmniGen2: Towards Instruction-Aligned Multimodal Generation

https://arxiv.org/abs/2506.18871
generic🟡 PoC Available

OmniGen2: Unauthenticated RCE via Pickle Deserialization in BAAI's Reward Server - Chocapikk's Cybersecurity Blog

https://chocapikk.com/posts/2026/omnigen2-pickle-rce/
github_pr

Fix unsafe pickle deserialization in reward server (CVE-2026-25873)

Upstream fix in progress (PR #139 · VectorSpaceLab/OmniGen2, state=open)

https://github.com/VectorSpaceLab/OmniGen2/pull/139

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-16 14:07 UTCEPSS rescore
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-13 16:47 UTCEPSS rescore
  5. 2026-09-12 15:01 UTCEPSS rescore
  6. 2026-09-11 14:52 UTCEPSS rescore
  7. 2026-09-10 09:34 UTCEPSS rescore
  8. 2026-09-08 22:00 UTCEPSS rescore
  9. 2026-09-07 16:01 UTCEPSS rescore
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-04 05:06 UTCEPSS rescore
  13. 2026-09-02 14:11 UTCEPSS rescore
  14. 2026-09-01 13:53 UTCEPSS rescore
  15. 2026-09-01 04:39 UTCEPSS rescore
  16. 2026-08-30 19:17 UTCEPSS rescore
  17. 2026-08-30 01:22 UTCEPSS rescore
  18. 2026-08-28 21:41 UTCEPSS rescore
  19. 2026-08-27 14:25 UTCEPSS rescore
  20. 2026-08-26 14:46 UTCEPSS rescore
  21. 2026-08-25 13:48 UTCEPSS rescore
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-19 17:03 UTCEPSS rescore
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  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 11:14 UTCEG score recompute
  5. 2026-08-16 11:14 UTCGHSA enrichment
  6. 2026-08-16 02:14 UTCEPSS rescore
  7. 2026-08-15 01:30 UTCEPSS rescore
  8. 2026-08-15 00:00 UTCGHSA enrichment
  9. 2026-08-14 19:55 UTCGHSA enrichment
  10. 2026-08-14 15:32 UTCGHSA enrichment
  11. 2026-08-14 11:27 UTCGHSA enrichment
  12. 2026-08-14 07:23 UTCEG score recompute
  13. 2026-08-14 07:23 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 02:14 UTCGHSA enrichment
  16. 2026-08-12 22:09 UTCEG score recompute
  17. 2026-08-12 22:09 UTCGHSA enrichment
  18. 2026-08-12 13:50 UTCEPSS rescore
  19. 2026-08-12 01:35 UTCGHSA enrichment
  20. 2026-08-11 21:30 UTCEG score recompute
  21. 2026-08-11 21:30 UTCGHSA enrichment
  22. 2026-08-11 13:42 UTCEPSS rescore
  23. 2026-08-11 08:39 UTCGHSA enrichment
  24. 2026-08-11 04:35 UTCEG score recompute
  25. 2026-08-11 04:34 UTCGHSA enrichment
  26. 2026-08-11 00:00 UTCEPSS rescore
  27. 2026-08-10 09:54 UTCGHSA enrichment
  28. 2026-08-10 05:50 UTCGHSA enrichment
  29. 2026-08-10 01:39 UTCGHSA enrichment
  30. 2026-08-09 21:32 UTCGHSA enrichment
  31. 2026-08-09 17:28 UTCEG score recompute
  32. 2026-08-09 17:28 UTCGHSA enrichment
  33. 2026-08-09 13:46 UTCEPSS rescore
  34. 2026-08-09 13:23 UTCGHSA enrichment
  35. 2026-08-09 06:57 UTCEG score recompute
  36. 2026-08-09 06:57 UTCGHSA enrichment
  37. 2026-08-08 16:37 UTCEPSS rescore
  38. 2026-08-08 09:50 UTCGHSA enrichment
  39. 2026-08-08 05:45 UTCGHSA enrichment
  40. 2026-08-08 01:40 UTCGHSA enrichment
  41. 2026-08-07 21:35 UTCGHSA enrichment
  42. 2026-08-07 17:30 UTCEG score recompute
  43. 2026-08-07 17:30 UTCGHSA enrichment
  44. 2026-08-06 19:28 UTCEG score recompute
  45. 2026-08-06 19:28 UTCGHSA enrichment
  46. 2026-08-06 13:46 UTCEPSS rescore
  47. 2026-08-06 10:28 UTCGHSA enrichment
  48. 2026-08-06 05:42 UTCGHSA enrichment
  49. 2026-08-06 01:37 UTCEG score recompute
  50. 2026-08-06 01:37 UTCGHSA enrichment
  51. 2026-08-05 19:17 UTCEPSS rescore
  52. 2026-08-04 15:10 UTCEPSS rescore
  53. 2026-08-04 04:52 UTCGHSA enrichment
  54. 2026-08-04 00:47 UTCEG score recompute
  55. 2026-08-04 00:47 UTCGHSA enrichment
  56. 2026-08-03 10:36 UTCEPSS rescore
  57. 2026-08-03 01:11 UTCGHSA enrichment
  58. 2026-08-02 20:44 UTCGHSA enrichment
  59. 2026-08-02 16:39 UTCEG score recompute
  60. 2026-08-02 16:39 UTCGHSA enrichment
  61. 2026-08-02 02:26 UTCEPSS rescore
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-30 16:27 UTCEPSS rescore
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-28 15:36 UTCEPSS rescore
  66. 2026-07-28 02:25 UTCEG score recompute
  67. 2026-07-28 02:25 UTCGHSA enrichment
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-26 14:54 UTCEPSS rescore
  70. 2026-07-25 14:18 UTCEPSS rescore
  71. 2026-07-25 14:17 UTCEPSS rescore
  72. 2026-07-24 14:17 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 14:18 UTCEPSS rescore
  75. 2026-07-23 03:07 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-25873?
CVE-2026-25873 is a critical vulnerability published on March 18, 2026. 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…
When was CVE-2026-25873 disclosed?
CVE-2026-25873 was first published in the National Vulnerability Database on March 18, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-25873 actively exploited?
CVE-2026-25873 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 36.5% of all scored CVEs.
What is the CVSS score of CVE-2026-25873?
CVE-2026-25873 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-25873?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-25873, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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