CVE-2023-49791

Summary

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server prior to versions 26.0.9 and 27.1.4; as well as Nextcloud Enterprise Server prior to versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4; when an attacker manages to get access to an active session of another user via another way, they could delete and modify workflows by sending calls directly to the API bypassing the password confirmation shown in the UI. Nextcloud Server versions 26.0.9 and 27.1.4 and Nextcloud Enterprise Server versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4 contain a patch for this issue. No known workarounds are available.

Affected Software

VendorProductVersion RangeStatus
nextcloudsecurity-advisories>= 23.0.0, < 23.0.12.13affected
nextcloudsecurity-advisories>= 24.0.0, < 24.0.12.9affected
nextcloudsecurity-advisories>= 25.0.0, < 25.0.13.4affected
nextcloudsecurity-advisories>= 26.0.0, < 26.0.9affected
nextcloudsecurity-advisories>= 27.0.0, < 27.1.4affected

Weaknesses

  • CWE-284: CWE-284: Improper Access Control
  • CWE-287: CWE-287: Improper Authentication

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

References