CVE-2026-25519

HIGH

OpenSlides 4.2.5-4.2.29 - Unauthenticated Incorrect Access Control via Local Login Bypass

Title source: llm
STIX 2.1

Description

OpenSlides is a free, web based presentation and assembly system for managing and projecting agenda, motions and elections of an assembly. Prior to version 4.2.29, OpenSlides supports local logins with username and password or an optionally configurable single sign on with SAML via an external IDP. For users synced to OpenSlides via an external IDP, there is an incorrect access control regarding the local login of these users. Users can successfully login using the local login form and the OpenSlides username of a SAML user and a trivial password. This password is valid for all SAML users. This issue has been patched in version 4.2.29.

References (4)

Core 4

Scores

CVSS v3 8.1
EPSS 0.0049
EPSS Percentile 38.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-284
Status published
Products (1)
openslides/openslides 4.2.5 - 4.2.29
Published Feb 04, 2026
Tracked Since Feb 18, 2026