# CVE-2026-82983: CVE-2026-82983

Status: published. Published: 2026-10-27. Updated: 2026-11-04.

The Tables app's share-listing endpoint (GET /apps/tables/share/table/{tableId}) did not verify that the requesting user has manage-level permission on the table before returning the full list of share recipients (users, groups, and teams) along with their permission levels. A user who was only granted read-data access to a table, and who is correctly prevented from seeing this information in the web UI, could call the endpoint directly to enumerate everyone the table is shared with and their access levels.

This does not expose the table's data itself beyond what the read-data grant already permits, only the list of share recipients and their permission levels.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Nextcloud / Tables: ≥ 0.8.1; ≤ 2.0.0 (affected, semver). Source: CNA: hackerone

## Severity and prioritization

- CVSS 3.0: 3.3 (low); CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N; source: CNA: hackerone

- CISA KEV: No listing in collected sources

- EPSS: 0.11% as of 2026-11-04; percentile 1.48%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-200

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://hackerone.com/reports/3524971 (CNA: hackerone)

## Provenance

- CNA: hackerone: https://www.cve.org/CVERecord?id=CVE-2026-82983; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-82983; retrieved 2026-11-04; source updated Not reported

Revision: d34f1b4eeac0249fc9ab6d9c37e7d5e2b9369cddbcda43193dcef893fc2f2369

Canonical: https://y2.dev/cve/CVE-2026-82983

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