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cpe:2.3:a:poljar:matrix-nio:*:*:*:*:*:*:*:*

part: a version: * update: *

VendorPoljar (0c9e259f-3e7b-5376-b1f1-2d334b6efcf5)
ProductMatrix Nio (74b6526d-919c-543e-833d-ffaeb7d64b13)
Edition*
Language*
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Notes

Imported from gcve-enriched-dumps CVE data

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Vulnerability references

IdentifiercpeApplicabilitySubmitteddb.gcve.eu detailsRationale
CVE:CVE-2022-39254 vulnerable 2026-06-08 05:47:18.443552 When matrix-nio receives forwarded room keys, the receiver doesn't check if it requested the key from the forwarder
HIGH (8.6)
matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue.
Published: 2022-09-29T14:35:10.000Z
Updated: 2025-04-23T16:53:59.840Z
Reference links
Imported from gcve-enriched-dumps CVE data

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