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CVE-2026-65828

Zammad: Pending upload deletion bypass via legacy attachment endpoint

LOW
2.3
CVSS Score
Published: September 25, 2026 at 05:28 PM UTC
Updated: September 28, 2026 at 02:45 PM UTC
1 product affected across 1 vendorZammad

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Severity
LOW2.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the legacy destroy_form action on AttachmentsController deletes UploadCache Store records based solely on a user-supplied form_id without verifying that the requesting user owns those records. An authenticated attacker who learns another user's pending-upload UUID can silently remove temporary file uploads before the victim submits their ticket or article. This issue is fixed in version 7.1.2.

Affected

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

Zammad· Zammad
60%
v < 7.1.2
Affected range stops below 7.1.2, so it looks safe — our inference, not a vendor statement

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 (2)

x_refsource_CONFIRM
Source: cverecord
https://github.com/zammad/zammad/security/advisories/GHSA-x4f3-367g-m93g
x_refsource_MISC
Source: cverecord
https://github.com/zammad/zammad/commit/3b755736fdbee8ff6ddf53661d6912d3d3028325

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

2.3LOWGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862

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