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CVE-2026-82982

MEDIUM
4.3
CVSS Score
Published: September 18, 2026 at 01:26 AM UTC
Updated: September 18, 2026 at 08:17 PM UTC
1 product affected across 1 vendorApproval

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Approval· Nextcloudnextcloud-app
60%
1.0.0 ≤ v ≤ 3.0.01.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://hackerone.com/reports/3610332

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMhackerone
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-840

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