CVE-2026-93450CWE-674

CVE-2026-93450

High · published September 18, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
59.9
In the wild
Unconfirmed
What it is

go-openapi/swag jsonutils before 0.27.1 contains a stack overflow vulnerability in ordered JSON parsing and serialization due to unbounded recursion with no depth limit. Remote unauthenticated attackers can submit deeply nested JSON documents to services accepting OpenAPI specifications, causing fatal stack overflow that terminates the process and all in-flight requests.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00917 · 59.9th percentile
Weakness
CWE-674 · Uncontrolled Recursion
Published
2026-09-18T04:17Z
References (7)
https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/adapter.go#L68 · [email protected]https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/ordered_map.go#L214 · [email protected]https://github.com/go-openapi/swag/commit/0c24346ced59a25811e8694a915e7131d25ccb0e · [email protected]https://github.com/go-openapi/swag/security/advisories/GHSA-xh24-9qpg-8w28 · [email protected]https://www.vulncheck.com/advisories/go-openapi-swag-jsonutils-before-0.27.1-uncontrolled-recursion-in-ordered-json-marshal-and-unmarshal · [email protected]https://github.com/go-openapi/swag/security/advisories/GHSA-xh24-9qpg-8w28 · 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/go-openapi/swag · [email protected]
EPSS history
Timeline
  • 19 SEP 03:55Z
    EPSS moved — → 1%
    epss
  • 17 SEP 23:25Z
    go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion in Ordered JSON Marshal and Unmarshal
    cvelistv5