CVE Explorer

CVE-2026-31239

The mamba language model framework thru 2.2.6 is vulnerable to insecure deserialization (CWE-502) when loading pre-trained models from HuggingFace Hub. The MambaLMHeadModel.from_pretrained() method uses torch.load() to load the pytorch_model.bin weight file 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 publishing a malicious model repository on HuggingFace H

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8fadc283094c7e0d0802b259a32070bc79aa3a5c6117af72a005ea07448078a8

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"n/a","lang":"en","type":"text"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"description":"n/a","lang":"en","type":"text"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

2 source assertions

{"url":"https://github.com/state-spaces/mamba"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/cna/references/0

{"url":"https://www.notion.so/CVE-2026-31239-35d1e1393188810d9baedfbd8363f396"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:82c8f3ff62d1a29c01de4c11449b776d46b5a66caa089e4e4293c6c7d5076af9 · sha256:f3b0a4d2000c1bf8… · /containers/cna/references/1

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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