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CVE

CVE-2026-25519

OpenSlides has incorrect access control vulnerability in authentication service
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CVE

CVE-2026-25519

OpenSlides has incorrect access control vulnerability in authentication service

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.1
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25519.json, https://github.com/OpenSlides/OpenSlides/releases/tag/4.2.29, https://github.com/OpenSlides/OpenSlides/security/advisories/GHSA-vv4h-8wfc-pf8c, https://github.com/OpenSlides/openslides-auth-service/commit/70c1aa9f5e1db59ec120ecce98d1c1169350a4ee, https://github.com/OpenSlides/openslides-auth-service/pull/889, https://nvd.nist.gov/vuln/detail/CVE-2026-25519

Severity

8.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.1
EPSS Probability
0.0006%
EPSS Percentile
0.1841%
Introduced Version
89d3f5b68366d630219b4d4c4e43c747e7815ec1,0
Fix Available
40c253579a450d9591c5916560310e9f1320bc69,70c1aa9f5e1db59ec120ecce98d1c1169350a4ee

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