CVE-2026-90777 json
ESPnet before 202609 Remote Code Execution via Unsafe Deserialization
published 2026-09-13 57 d ago modified 2026-09-24 45 d ago also EUVD-2026-77001
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
ESPnet before 202609 deserializes pretrained model checkpoints using torch.load with weights_only=False, allowing arbitrary code execution from attacker-supplied files. Attackers can craft malicious checkpoint files that execute code during deserialization when loaded through the initialization or fine-tuning path.
Patch / fix
- espnet espnet 202609
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 55 d ago
Exploit prediction
0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/espnet/espnet/security/advisories/GHSA-64f6-3gqc-r926 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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 |
Affected products
- espnet espnet
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
github.com
/espnet/espnet/commit/91ca045fc179f29bc7b7fe05cd852aea65310003
patch
-
github.com
/espnet/espnet/security/advisories/GHSA-64f6-3gqc-r926
vendor-advisory, exploit
-
github.com
/espnet/espnet/blob/v.202511/espnet2/torch_utils/load_pretrained_model.py#L99
technical-description
-
github.com
/espnet/espnet/releases/tag/v.202609
release-notes
-
github.com
/espnet/espnet
product
-
vulncheck.com
/advisories/espnet-before-202609-remote-code-execution-via-unsafe-deserialization
third-party-advisory
Sources
- CVE List CVE-2026-90777
- NVD CVE-2026-90777
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.