---
id: CVE-2024-1314
aliases:
  - GHSA-hvp4-vrv2-8wrq
  - PYSEC-2026-1494
title: Kinto Attachment's attachments can be replaced on read-only records
summary: Kinto Attachment's attachments can be replaced on read-only records
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N'
vendor: kinto-attachment
product: kinto-attachment
ecosystem: pip
affected:
  - kinto-attachment < 6.4.0
patched:
  - kinto-attachment 6.4.0
published: '2024-02-08'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-hvp4-vrv2-8wrq'
references:
  - url: >-
      https://github.com/Kinto/kinto-attachment/security/advisories/GHSA-hvp4-vrv2-8wrq
  - url: >-
      https://github.com/Kinto/kinto-attachment/commit/f4a31484f5925cbc02b59ebd37554538ab826ca1
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1879034'
  - url: 'https://github.com/Kinto/kinto-attachment'
tags:
  - osv
  - pip
ingestedAt: '2026-07-08T18:25:50.321Z'
---

## Overview

### Impact

The attachment file of an existing record can be replaced if the user has `"read"` permission on one of the parent (collection or bucket).

And if the `"read"` permission is given to `"system.Everyone"` on one of the parent, then the attachment can be replaced on a record using an anonymous request.

Note that if the parent has no explicit read permission, then the records attachments are safe.

### Patches

- Patch released in kinto-attachment 6.4.0
- https://github.com/Kinto/kinto-attachment/commit/f4a31484f5925cbc02b59ebd37554538ab826ca1

### Workarounds

None if the read permission has to remain granted.

Updating to 6.4.0 or applying the patch individually (if updating is not feasible) is strongly recommended.

### References

- https://bugzilla.mozilla.org/show_bug.cgi?id=1879034

## Affected packages

- `kinto-attachment < 6.4.0`

## Remediation

Upgrade to a patched release:

- `kinto-attachment 6.4.0`