Bug 2498355 (CVE-2026-54499) - CVE-2026-54499 stanza: Stanza: Remote Code Execution via unsafe deserialization in model loaders
Summary: CVE-2026-54499 stanza: Stanza: Remote Code Execution via unsafe deserializati...
Keywords:
Status: NEW
Alias: CVE-2026-54499
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-08 23:02 UTC by OSIDB Bzimport
Modified: 2026-07-09 07:17 UTC (History)
13 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-08 23:02:54 UTC 
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(..., weights_only=True) but fall back to torch.load(..., weights_only=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.
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