Orta CVSS 6.5
CVE-2026-42181: CVE-2026-42181: sunucu taraflı istek sahteciliği (SSRF)
Açıklama (NVD)
Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy fetches metadata for user-supplied post URLs and, under the default StoreLinkPreviews image mode, downloads the preview image through local pict-rs. While the top-level page URL is checked against internal IP ranges, the extracted og:image URL is not subject to the same restriction. As a result, an authenticated low-privileged user can submit an attacker-controlled public page whose Open Graph image points to an internal image endpoint. Lemmy will fetch that internal image server-side and store a local thumbnail that can then be served back to users. This issue has been patched in version 0.19.18.
Özet bilgiler
- CVSS v3.1
- 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS
- %0,26 (yüzdelik 18)
- CWE
- CWE-918
- Yama
- Yok / bilinmiyor