CVE-2026-113601CWE-862broken-access-control

CVE-2026-113601

Medium · published October 20, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
15.6
In the wild
Unconfirmed
What it is

Memos before 0.27.0 contains a missing authorization vulnerability in the ActivityService ListActivities and GetActivity API methods that allows authenticated users to view all users' activity records. Low-privileged attackers can enumerate sequential activity IDs to obtain creator IDs, timestamps, and memo-comment references, including activity on other users' private memos.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00251 · 15.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-10-20T20:17Z
References (5)
https://github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.go · [email protected]https://github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88 · [email protected]https://github.com/usememos/memos/issues/5651 · [email protected]https://github.com/usememos/memos/releases/tag/v0.27.0 · [email protected]https://www.vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivity · [email protected]
EPSS history
Timeline
  • 22 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 20 OCT 15:40Z
    Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity
    cvelistv5
  • 20 OCT 15:40Z
    Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity
    cvelistv5