CVE-2026-126934 json
Zipline 4.3.2 before 4.8.0 Rate Limit Bypass via Spoofed X-Forwarded-For
published last mo. modified 11h ago also GHSA-v938-v8wg-9497 , EUVD-2026-124144
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository diced/zipline. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no EPSS score yet
- public exploits
- 0
- none known
Summary
Zipline 4.3.2 before 4.8.0 contains a rate limit bypass vulnerability that allows unauthenticated attackers to evade throttling by spoofing X-Forwarded-For headers when core.trustProxy is enabled. Attackers can send a different X-Forwarded-For value per request to obtain fresh rate-limit buckets, enabling unlimited guessing of login passwords, TOTP codes, and file and URL passwords.
Patch / fix
- diced zipline 4.8.0
Is CVE-2026-126934 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected products
- diced zipline
Classification
- Weakness
-
- CWE-348 Use of Less Trusted Source
References
-
github.com
/diced/zipline/commit/6bac7e6bb18cb37c1d09f91306c1ffbdca00097c
patch
-
github.com
/diced/zipline/security/advisories/GHSA-v938-v8wg-9497
vendor-advisory, advisory
-
github.com
/diced/zipline/releases/tag/v4.8.0
release-notes
-
github.com
/diced/zipline/blob/v4.7.0/src/server/index.ts#L58-L62
technical-description
-
github.com
/diced/zipline/blob/v4.7.0/src/server/startup/plugins.ts#L70-L73
technical-description
-
vulncheck.com
/advisories/zipline-4.3.2-before-4.8.0-rate-limit-bypass-via-spoofed-x-forwarded-for
third-party-advisory
Sources
- CVE List CVE-2026-126934
- NVD CVE-2026-126934
- Maintainer advisory GHSA-v938-v8wg-9497
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of diced/zipline published their own advisory on GitHub. Reviewed sources take precedence over it.