CVE-2026-31252

MEDIUMNVD 5.75.7—
EchelonGraph scoreMEDIUM confidence

Score 5.7 from GitHub Security Advisory published 2026-05-11. NVD baseline CVSS 5.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.7Exploit: NoneExposed: 0

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

CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading component. The framework uses torch.load() to load model weight files (e.g., llm.pt, flow.pt, hift.pt) without enabling the security-restrictive weights_only=True parameter. This allows the deserialization of arbitrary Python objects via the pickle module. An attacker can exploit this by providing a malicious model directory containing specially crafted model files. When a victim starts the CosyVoice Web UI pointing to this directory, arbitrary code is executed on the victim's system during the model loading process.

CVSS v3
5.7
EG Score
5.7(medium)
EPSS
1.6%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 12, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Notion

https://www.notion.so/CVE-2026-31252-35d1e139318881ef8acfcd877a432569
generic🔴 Active Exploitation

GitHub - FunAudioLLM/CosyVoice: Multi-lingual large voice generation model, providing inference, training and deployment full-stack ability. · GitHub

https://github.com/FunAudioLLM/CosyVoice

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 38× 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 123 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-31252?
CVE-2026-31252 is a medium vulnerability published on May 11, 2026. CosyVoice thru commit 6e01309e01bc93bbeb83bdd996b1182a81aaf11e (2025-30-21) contains an insecure deserialization vulnerability (CWE-502) in its model loading component. The framework uses torch.load() to load model weight files (e.g., llm.pt, flow.pt, hift.pt) without enabling the…
When was CVE-2026-31252 disclosed?
CVE-2026-31252 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31252 actively exploited?
CVE-2026-31252 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-31252?
CVE-2026-31252 has a CVSS v3 base score of 5.7 (NVD).
How do I remediate CVE-2026-31252?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31252, 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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