CVE-2026-33693

Katalog CVE

CVSS 6.5 · Medium EPSS 0,38%

Kerentanan Server-Side Request Forgery (SSRF). Skor CVSS 3.1 6.5 (Medium) menurut github.com.

Deskripsi (NVD)

Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.7.0-beta.9, the `v4_is_invalid()` function in `activitypub-federation-rust` (`src/utils.rs`) does not check for `Ipv4Addr::UNSPECIFIED` (0.0.0.0). An unauthenticated attacker controlling a remote domain can point it to 0.0.0.0, bypass the SSRF protection introduced by the fix for CVE-2025-25194 (GHSA-7723-35v7-qcxw), and reach localhost services on the target server. Version 0.7.0-beta.9 patches the issue.

Rincian

Terbit di NVD

27 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 3.1

6.5 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-918: Server-Side Request Forgery (SSRF)

EPSS (30 hari)

0,38% peluang dieksploitasi; lebih tinggi dari 30,4% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/LemmyNet/activitypub-federation-rust/commit/4ae8532b17bc35755240b7f55d4a5b7665351599
• https://github.com/LemmyNet/lemmy/security/advisories/GHSA-q537-8fr5-cw35
• https://github.com/advisories/GHSA-7723-35v7-qcxw