Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Backpack CRUD (backpack/crud) versions 6.0.0 to before 6.8.14 and 7.0.0 to before 7.0.38 are affected. The image upload field accepts any base64 payload that begins with "data:image" without checking the MIME type or the decoded file bytes, so an authenticated admin can store a file of arbitrary type on the configured disk, possibly leading to stored XSS when the file is served. Upgrade to 6.8.14 or 7.0.38. Setting X-Content-Type-Options to nosniff on admin responses is an additional defense.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.4 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0026, the 17th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:24 UTC First seen by agentprime
- 31 Oct 2026, 14:24 UTC Confirmed by OSV