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CVE-2026-25891

Fiber is an Express inspired web framework written in Go. A Path Traversal (CWE-22) vulnerability in Fiber allows a remote attacker to bypass the static middleware sanitizer and read arbitrary files on the server file system on Windows. This affects Fiber v3 through version 3.0.0. This has been patched in Fiber v3 version 3.1.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d5865ba8e2ea63a423556f833a4d17f3c42b837d8da38dc8a07538aa2f6d3d4a
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":">= 3.0.0, < 3.1.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:beb291ca712d2854982c5571864fbea80e405b8eb14a18b1543a3e6372d85d2d · sha256:1b719e24bf86980f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.7,"baseSeverity":"HIGH","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:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:beb291ca712d2854982c5571864fbea80e405b8eb14a18b1543a3e6372d85d2d · sha256:1b719e24bf86980f… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:beb291ca712d2854982c5571864fbea80e405b8eb14a18b1543a3e6372d85d2d · sha256:1b719e24bf86980f… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86","tags":["x_refsource_MISC"],"url":"https://github.com/gofiber/fiber/commit/59133702301c2ab7b776dd123b474cbd995f2c86"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:beb291ca712d2854982c5571864fbea80e405b8eb14a18b1543a3e6372d85d2d · sha256:1b719e24bf86980f… · /containers/cna/references/2
{"name":"https://github.com/gofiber/fiber/pull/4064","tags":["x_refsource_MISC"],"url":"https://github.com/gofiber/fiber/pull/4064"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:beb291ca712d2854982c5571864fbea80e405b8eb14a18b1543a3e6372d85d2d · sha256:1b719e24bf86980f… · /containers/cna/references/1
{"name":"https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gofiber/fiber/security/advisories/GHSA-m3c2-496v-cw3v"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:beb291ca712d2854982c5571864fbea80e405b8eb14a18b1543a3e6372d85d2d · sha256:1b719e24bf86980f… · /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.

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