P4Verified

CVE-2021-48011: servor 1.0.0 through 4.0.2

CVE-2021-48011. CVSS 3.1 base score 7.5 (GitHub Advisory Database).

Affected technology

servor · 1.0.0 through 4.0.2
lukejacksonn

Description’s affected range: through 4.0.2

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Unauthenticated remote attackers can escape the served root by sending URL-encoded dot segments. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality impact as high; integrity and availability impact as none.

Published 13-Oct-2026 01:49 UTC

CWE: CWE-22
CCR priority: 30.0 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · GitHub Advisory Database
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-13 02:51:46.931182+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-13 01:49:08.152775+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2021-48011.html