critical
CVE-2026-73253
Mongoose is an embedded web server and network library. Prior to versi ...
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Julia9.1CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Trivy's own label is CRITICAL. Rated critical by NVD, Julia.
Description
Mongoose is an embedded web server and network library. Prior to version 7.22, an on-path network attacker with a wildcard certificate for a parent domain can impersonate deeper subdomains to a client using the built-in TLS stack. The mg_tls_verify_cert_san() and mg_tls_verify_cert_cn() functions in src/tls_builtin.c call mg_match(), whose wildcard can cross DNS label boundaries, so a pattern such as *.example.com can match foo.bar.example.com. The resulting hostname verification bypass permits interception and modification of TLS traffic. This issue is fixed in version 7.22.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| julia::Julia Ecosystem Security Advisories | Mongoose_jll | no fix listed |
| debian 14 | mongoose | 7.22+ds-1 |
| rapidfort fedora 43 | mongoose, mongoose-devel, mongoose-lib | 3.1-30.fc43 |
Show all 5 entries from 3 sources
| Source | Package | Fixed in |
|---|---|---|
| julia::Julia Ecosystem Security Advisories | Mongoose_jll | no fix listed |
| debian 14 | mongoose | 7.22+ds-1 |
| rapidfort fedora 43 | mongoose | 3.1-30.fc43 |
| rapidfort fedora 43 | mongoose-devel | 3.1-30.fc43 |
| rapidfort fedora 43 | mongoose-lib | 3.1-30.fc43 |