CVE-2026-126934
Zipline 4.3.2 before 4.8.0 Rate Limit Bypass via Spoofed X-Forwarded-For
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-348 |
| Vendor | diced |
| Product | zipline |
| Published | Nov 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
diced / zipline
4.3.2 < 4.8.0
References
github.com: https://github.com/diced/zipline/security/advisories/GHSA-v938-v8wg-9497 github.com: https://github.com/diced/zipline/commit/6bac7e6bb18cb37c1d09f91306c1ffbdca00097c github.com: https://github.com/diced/zipline/releases/tag/v4.8.0 github.com: https://github.com/diced/zipline/blob/v4.7.0/src/server/index.ts#L58-L62 github.com: https://github.com/diced/zipline/blob/v4.7.0/src/server/startup/plugins.ts#L70-L73 vulncheck.com: https://www.vulncheck.com/advisories/zipline-4.3.2-before-4.8.0-rate-limit-bypass-via-spoofed-x-forwarded-for
Credits
Sandipkumar sah