CVE Explorer
CVE-2025-62595
Koa is expressive middleware for Node.js using ES2017 async functions. In versions 2.16.2 to before 2.16.3 and 3.0.1 to before 3.0.3, a bypass to CVE-2025-8129 was discovered in the Koa.js framework affecting its back redirect functionality. In certain circumstances, an attacker can manipulate the Referer header to force a user’s browser to navigate to an external, potentially malicious website. This occurs because the implementation incorrectly treats some specially crafted URLs as safe relativ
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"koa","vendor":"koajs","versions":[{"status":"affected","version":">= 2.16.2, < 2.16.3"},{"status":"affected","version":">= 3.0.1, < 3.0.3"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:fd9cbfdb916e14f581d62ddb25a01e37adc9d898e781bd84b82de72e9ddb216d · sha256:b08756fff52d5140… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:fd9cbfdb916e14f581d62ddb25a01e37adc9d898e781bd84b82de72e9ddb216d · sha256:b08756fff52d5140… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-601","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:fd9cbfdb916e14f581d62ddb25a01e37adc9d898e781bd84b82de72e9ddb216d · sha256:b08756fff52d5140… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/koajs/koa/commit/769fd75cc6b30d72493b370b5a3ae2332ca03c5b","tags":["x_refsource_MISC"],"url":"https://github.com/koajs/koa/commit/769fd75cc6b30d72493b370b5a3ae2332ca03c5b"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fd9cbfdb916e14f581d62ddb25a01e37adc9d898e781bd84b82de72e9ddb216d · sha256:b08756fff52d5140… · /containers/cna/references/1
{"name":"https://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fd9cbfdb916e14f581d62ddb25a01e37adc9d898e781bd84b82de72e9ddb216d · sha256:b08756fff52d5140… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/koajs/koa/security/advisories/GHSA-g8mr-fgfg-5qpc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fd9cbfdb916e14f581d62ddb25a01e37adc9d898e781bd84b82de72e9ddb216d · sha256:b08756fff52d5140… · /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.