Is there a public exploit for CVE-2026-115473?

No public exploit for CVE-2026-115473 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-115473?

CVE-2026-115473 scores CVSS 6.5 (v3.1), rated medium.

What does CVE-2026-115473 affect?

CVE-2026-115473 affects Cesanta Mongoose.

6.5 Medium

Mongoose is an embedded web server and network library.

CVE-2026-115473

Mongoose is an embedded web server and network library. Prior to 7.22, mgpathissane in src/util.c read path.buf[1] without first requiring path.len to be at least two and read s[2] when only two bytes remained. Unauthenticated remote requests reaching mghttpupload or mghttpservedir with the affected short path shapes could therefore trigger one-byte heap out-of-bounds reads. On bare-metal or RTOS targets without memory protection, the adjacent byte could be exposed or influence whether a path was accepted, and instrumented builds could crash. This issue is fixed in version 7.22.

Assessment

CVSS: 6.5 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 November 2026
Last updated: 4 November 2026
Affected: Cesanta · Mongoose
Assigner: GitHub_M

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

At the source

EUVD (ENISA)

References

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