CVE Explorer
CVE-2026-55677
Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"echo","vendor":"labstack","versions":[{"status":"affected","version":"< 4.15.3"},{"status":"affected","version":">= 5.0.0, < 5.2.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:480b4d2cecbb8cbb83959b09158c3204f0c2379aeeb5914791b212bcbca942ea · sha256:40d1219a0ebe8a2b… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:480b4d2cecbb8cbb83959b09158c3204f0c2379aeeb5914791b212bcbca942ea · sha256:40d1219a0ebe8a2b… · /containers/cna/metrics/0/cvssV3_1
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_v5cweurn:baitaphish:normalized-source-record:v2:480b4d2cecbb8cbb83959b09158c3204f0c2379aeeb5914791b212bcbca942ea · sha256:40d1219a0ebe8a2b… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:480b4d2cecbb8cbb83959b09158c3204f0c2379aeeb5914791b212bcbca942ea · sha256:40d1219a0ebe8a2b… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:480b4d2cecbb8cbb83959b09158c3204f0c2379aeeb5914791b212bcbca942ea · sha256:40d1219a0ebe8a2b… · /containers/adp/0/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.