Zipline 4.6.2 before 4.8.0 contains a policy bypass vulnerability that allows authenticated users to evade
Source GCVE Database
Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.8.0 when convenient.
Data as of 12 Nov 2026, 01:35 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 5.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 4.3 |
- Patch
- Available – fixed in 4.8.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade zipline to 4.8.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| dicedzipline | Affected
| Fixed in
|
GitHubziplinepkg:github/ziplineOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fixed version of Zipline is available starting from version 4.8.0. Users should upgrade to version 4.8.0 or later to remediate this vulnerability. No other mitigation steps are indicated in the advisory.
Description
Zipline versions from 4.6.2 up to but not including 4.8.0 contain a policy bypass vulnerability. Authenticated users can evade administrator-disabled MIME types by modifying file metadata via a PATCH request, allowing them to upload files with disallowed content types such as text/html. This could lead to unauthorized content being served with a disabled MIME type.
References
- github.com/diced/zipline/security/advisories/GHSA-rgxm-54cf-whf7 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-126932 (opens in a new tab)
- github.com/diced/zipline/commit/fc8e886ca841b86a3f677cd7dac1bf9a5bd45b2c (opens in a new tab)
- github.com/diced/zipline/blob/v4.7.0/src/server/routes/api/user/files/%5Bid%5D/index.ts (opens in a new tab)
- github.com/diced/zipline/releases/tag/v4.8.0 (opens in a new tab)
- vulncheck.com/advisories/zipline-4.6.2-before-4.8.0-disabled-mime-type-policy-bypass-via-file-metadata-update (opens in a new tab)