CVE-2026-54499

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Source
https://cve.org/CVERecord?id=CVE-2026-54499
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54499.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54499
Aliases
Published
2026-07-08T22:23:02.664Z
Modified
2026-07-13T16:43:04.978357763Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Stanza: Remote Code Execution via Unsafe Pickle Deserialization in Model Loaders
Details

Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. Prior to 1.12.2, Stanza model loaders such as stanza.models.common.pretrain.Pretrain.load() attempt torch.load(..., weightsonly=True) but fall back to torch.load(..., weightsonly=False) on attacker-controllable pickle.UnpicklingError, allowing a malicious .pt pretrain or model file to execute arbitrary pickle code when a Stanza NLP pipeline loads it. This issue is fixed in version 1.12.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-502",
        "CWE-676"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54499.json"
}
References

Affected packages

Git / github.com/stanfordnlp/stanza

Affected ranges

Type
GIT
Repo
https://github.com/stanfordnlp/stanza
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b745008c68c9e50ccb5acd537cb6f2453f8b7ad4
Fixed
8e745c81b03fd477fe06322a7efabdce1ac28106
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.12.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.0.1
v0.*
v0.1.0
v0.1.2
v0.2.0
v1.*
v1.0.0
v1.0.1
v1.1.1
v1.10.0
v1.10.1
v1.11.0
v1.11.1
v1.12.0
v1.12.1
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.3.0
v1.4.0
v1.4.1
v1.4.2
v1.5.0
v1.5.1
v1.6.0
v1.6.1
v1.7.0
v1.8.0
v1.8.1
v1.8.2
v1.9.0
v1.9.1
v1.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54499.json"