CVE Explorer
CVE-2026-25882
Fiber is an Express inspired web framework written in Go. A denial of service vulnerability exists in Fiber v2 and v3 that allows remote attackers to crash the application by sending requests to routes with more than 30 parameters. The vulnerability results from missing validation during route registration combined with an unbounded array write during request matching. Version 2.52.12 patches the issue in the v2 branch and 3.1.0 patches the issue in the v3 branch.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"fiber","vendor":"gofiber","versions":[{"status":"affected","version":">= 2.0.0, < 2.52.12"},{"status":"affected","version":">= 3.0.0, < 3.1.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.5,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-129","description":"CWE-129: Improper Validation of Array Index","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/gofiber/fiber/blob/main/path.go#L514","tags":["x_refsource_MISC"],"url":"https://github.com/gofiber/fiber/blob/main/path.go#L514"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/references/2
{"name":"https://github.com/gofiber/fiber/blob/v2/path.go#L516","tags":["x_refsource_MISC"],"url":"https://github.com/gofiber/fiber/blob/v2/path.go#L516"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/references/3
{"name":"https://github.com/gofiber/fiber/pull/3962","tags":["x_refsource_MISC"],"url":"https://github.com/gofiber/fiber/pull/3962"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/references/1
{"name":"https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gofiber/fiber/security/advisories/GHSA-mrq8-rjmw-wpq3"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a9f20a88e57a233fe87ae98b4fe0d68c66e36377039988f24d06757d2b19c4bb · sha256:b482ae22b4499b4b… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.