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CVE-2026-39408

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path traversal issue in toSSG() allows files to be written outside the configured output directory during static site generation. When using dynamic route parameters via ssgParams, specially crafted values can cause generated file paths to escape the intended output directory. This vulnerability is fixed in 4.12.12.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f81f2f705274820c6f97e35a8a90199ad58fa7fcf74613151174000e13f00ea4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"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_v5cvss
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/adp/0/metrics/0/cvssV3_1

{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"product":"hono","vendor":"honojs","versions":[{"status":"affected","version":"< 4.12.12"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"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_v5cvss
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/adp/0/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /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:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/honojs/hono/commit/b470278920fffcfd6d76002755d6db53db827679","tags":["x_refsource_MISC"],"url":"https://github.com/honojs/hono/commit/b470278920fffcfd6d76002755d6db53db827679"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/cna/references/1
{"name":"https://github.com/honojs/hono/releases/tag/v4.12.12","tags":["x_refsource_MISC"],"url":"https://github.com/honojs/hono/releases/tag/v4.12.12"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /containers/cna/references/2
{"name":"https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:245a3f211a77b425b4fbdebb3bf037bc3ae654c8502f7ac15e1dafc8c3ce2d02 · sha256:053185ccdcdaafce… · /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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