Vulnerability in Gofiber Fiber
CVE-2025-48075
Fiber is an Express-inspired web framework written in Go. Starting in version 2.52.6 and prior to version 2.52.7, `fiber.Ctx.BodyParser` can map flat data to nested slices using `key[idx]value` syntax, but when idx is negative, it causes a panic instead of returning an error stating it cannot process the data. Since this data is user-provided, this could lead to denial of service for anyone relying on this `fiber.Ctx.BodyParser` functionality. Version 2.52.7 fixes the issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Gofiber Fiber — versions >= 2.52.6, < 2.52.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/gofiber/fiber/security/advisories/GHSA-hg3g-gphw-5hhm (Exploit, Vendor Advisory)
- github.com/gofiber/fiber/commit/e115c08b8f059a4a031b492aa9eef0712411853d (Patch)
Frequently asked questions
- What is CVE-2025-48075?
- CVE-2025-48075 is a high-severity vulnerability in Gofiber Fiber, classified under Improper Validation of Array Index. CVSS score: 7.5/10. Published 2025-05-22.
- How severe is CVE-2025-48075?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-48075 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.