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CVE-2026-29087

26
FAUCET Score

CVE-2026-29087 affects @hono/node-server versions prior to 1.19.10, allowing unauthorized access to protected static resources. This occurs due to inconsistent URL decoding between route-based middleware and static file resolution, specifically when encoded slashes (%2F) are present in the URL. Rated 7.5 HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), it poses a significant risk of information disclosure. There is no known active exploitation, public exploit code, or KEV listing, though it has garnered some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.19.10CPE matchmatch criteria
cpe:2.3:a:hono:node-server:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 7th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: @hono/node-serverFixed in: 1.19.10

Vendor Advisories (1)

npmGHSA-wc8c-qw6v-h7f6high

@hono/node-server has authorization bypass for protected static paths via encoded slashes in Serve Static Middleware

Mar 4, 2026

References

github.com / honojs/node-server/commit/455015be1697dd89974a68b70350ea7b2d126d2e
Patch
github.com / honojs/node-server/security/advisories/GHSA-wc8c-qw6v-h7f6
Vendor Advisory