P4Verified

CVE-2026-56104: chainlit 0 to before 2.10.1

CVE-2026-56104. CVSS 3.1 base score 8.2 (HIGH, Vendor/CNA). EPSS 0.00417 (percentile 0.33822), scored 2026-10-06.

Affected technology

chainlit · 0 to before 2.10.1
Chainlit

Description’s affected range: before 2.10.1

Component: Not specified by the source

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

What an attacker can do

Unauthenticated attackers can restore and inherit authenticated user sessions by presenting a valid sessionId during WebSocket session restoration without ownership verification. Vendor/CNA’s CVSS 4.0 assessment (base score 8.8/10) rates confidentiality and integrity impact as high; availability impact as none.

Published 2026-10-08 17:34:48.906074+00:00

CWE: CWE-862
CCR priority: 32.9 /100 (P4)
CVSS 3.1: 8.2 /10 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N · Vendor/CNA
EPSS: 0.00417 · percentile 0.33934 · 2026-10-08
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-56104.html