CVE-2026-93450: go-openapi swag · Uncontrolled Recursion
Affects go-openapi swagSource CVE Database V5
Not known to be exploited · CVSS 8.7 High : upgrade to 0.27.1 soon.
Data as of 1 Nov 2026, 22:58 UTC
- EPSS
- 0.9% chance of exploitation in 30 days – higher than 60% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.27.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.
What to do
Upgrade go-openapi swag to 0.27.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| go-openapiswag | Affected
| Fixed in
|
Goswagpkg:golang/swagOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in version 0.27.1 of the go-openapi swag jsonutils library. Users should upgrade to version 0.27.1 or later to remediate this vulnerability.
Description
CVE-2026-93450 is a high-severity stack overflow vulnerability in the go-openapi swag jsonutils library before version 0.27.1. It occurs due to uncontrolled recursion during ordered JSON parsing and serialization without a depth limit. Remote unauthenticated attackers can exploit this by submitting deeply nested JSON documents, causing the affected process to crash and terminate ongoing requests.
References
- github.com/go-openapi/swag/security/advisories/GHSA-xh24-9qpg-8w28 (opens in a new tab)
- github.com/go-openapi/swag/commit/0c24346ced59a25811e8694a915e7131d25ccb0e (opens in a new tab)
- github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/adapter.go (opens in a new tab)
- github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/ordered_map.go (opens in a new tab)
- github.com/go-openapi/swag (opens in a new tab)
- vulncheck.com/advisories/go-openapi-swag-jsonutils-before-0.27.1-uncontrolled-recursion-in-ordered-json-marshal-and-unmarshal (opens in a new tab)