CVE-2020-26280

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Summary

CVECVE-2020-26280
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-18 19:15:00 UTC
Updated2020-12-22 20:11:00 UTC
DescriptionOpenSlides is a free, Web-based presentation and assembly system for managing and projecting agenda, motions, and elections of assemblies. OpenSlides version 3.2, due to unsufficient user input validation and escaping, it is vulnerable to persistant cross-site scripting (XSS). In the web applications users can enter rich text in various places, e.g. for personal notes or in motions. These fields can be used to store arbitrary JavaScript Code that will be executed when other users read the respective text. An attacker could utilize this vulnerability be used to manipulate votes of other users, hijack the moderators session or simply disturb the meeting. The vulnerability was introduced with 6eae497abeab234418dfbd9d299e831eff86ed45 on 16.04.2020, which is first included in the 3.2 release. It has been patched in version 3.3 ( in commit f3809fc8a97ee305d721662a75f788f9e9d21938, merged in master on 20.11.2020).

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openslides Openslides 3.2 All All All
Application Openslides Openslides 3.2 All All All

References

ReferenceSourceLinkTags
www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2020-043.txt MISC www.syss.de Broken Link
Fixed HTML attribute validation by jsangmeister · Pull Request #5714 · OpenSlides/OpenSlides · GitHub MISC github.com Patch, Third Party Advisory
Fixed HTML attribute validation · OpenSlides/OpenSlides@f3809fc · GitHub MISC github.com Patch, Third Party Advisory
OpenSlides/CHANGELOG.rst at master · OpenSlides/OpenSlides · GitHub MISC github.com Release Notes, Third Party Advisory
XSS in all user-editable HTML fields · Advisory · OpenSlides/OpenSlides · GitHub CONFIRM github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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