Bug 2489776 (CVE-2026-12199)
| Summary: | CVE-2026-12199 nltk: NLTK: Remote unauthenticated denial of service in WordNet Browser HTTP server | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | anpicker, bparees, dschmidt, erezende, hasun, jfula, jkoehler, jlanda, jowilson, jwong, kshier, lphiri, nyancey, omaciel, ometelka, ptisnovs, simaishi, smcdonal, stcannon, syedriko, teagle, xdharmai, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in the `nltk` component, specifically in the `nltk.app.wordnet_app`. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted GET request to the WordNet Browser HTTP server when it is running in its default mode. This allows the attacker to immediately shut down the server, leading to a denial of service (DoS) and impacting service availability. The issue stems from insufficient authentication and protection mechanisms for critical server functions.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-06-17 08:01:26 UTC
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