CVE-2026-35636

MEDIUM

CVSS v3.1: 6.5 · EPSS: 0.0003 (9.3 percentile)

NetworkNo user interactionVendor advisory ref

Source data as of:

At a glance

Severity
MEDIUM
CVSS
6.5 v3.1 · NVD
EPSS
0.0003 (9.3 percentile) · FIRST.org
CISA KEV
No
Attack conditions (CVSS vector)
NetworkNo user interaction · Source: NVD Vector
Affected vendors
openclaw
Published
2026-04-09 · Modified: 2026-04-16

CVSS / EPSS / KEV

CVSS v3.1 6.5 / 10 MEDIUM Source: NVD
CVSS v4.0 7.1 / 10 HIGH Source: NVD
EPSS 0.0003 9.3 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

OpenClaw versions 2026.3.11 through 2026.3.24 contain a session isolation bypass vulnerability where session_status resolves sessionId to canonical session keys before enforcing visibility checks. Sandboxed child sessions can exploit this to access parent or sibling sessions that should be blocked by explicit sessionKey restrictions.

Record details

CVE ID
CVE-2026-35636
CVSS (v3.1)
6.5 (MEDIUM)
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability subscore
2.8
Impact subscore
3.6
EPSS
0.0003 (9.3 percentile) — 2026-04-17
CISA KEV
No
Weakness (CWE)
CWE-696
Affected vendors
openclaw
Affected configurations (CPE)
1
Published
2026-04-09
Modified
2026-04-16
Status
Analyzed

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.