CVE-2026-93450

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (6)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

go-openapi/swag jsonutils before 0.27.1 Uncontrolled Recursion in Ordered JSON Marshal and Unmarshal | Advisories | VulnCheck

https://www.vulncheck.com/advisories/go-openapi-swag-jsonutils-before-0.27.1-uncontrolled-recursion-in-ordered-json-marshal-and-unmarshal
generic

GitHub - go-openapi/swag: goodie bag in use in the go-openapi projects · GitHub

https://github.com/go-openapi/swag
generic

swag/jsonutils/adapters/stdlib/json/ordered_map.go at v0.27.0 · go-openapi/swag · GitHub

https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/ordered_map.go#L214
generic

swag/jsonutils/adapters/stdlib/json/adapter.go at v0.27.0 · go-openapi/swag · GitHub

https://github.com/go-openapi/swag/blob/v0.27.0/jsonutils/adapters/stdlib/json/adapter.go#L68
github_commit Patch Available

commit 0c24346ced59 (go-openapi/swag)

Patch available: go-openapi/swag v0.27.1 (contains commit 0c24346ced59)

https://github.com/go-openapi/swag/commit/0c24346ced59a25811e8694a915e7131d25ccb0e
github Patch Available🟡 PoC Available

Uncontrolled recursion in ordered JSON marshal/unmarshal causes stack-exhaustion crash (DoS) · Advisory · go-openapi/swag · GitHub

https://github.com/go-openapi/swag/security/advisories/GHSA-xh24-9qpg-8w28

Vendor Advisories for CVE-2026-93450(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 15:05 UTCGHSA enrichment
  2. 2026-09-19 02:14 UTCEG score recompute
  3. 2026-09-19 02:14 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 13:22 UTCEG score recompute
  6. 2026-09-18 13:22 UTCGHSA enrichment
  7. 2026-09-18 13:05 UTCEG score recompute
  8. 2026-09-18 13:05 UTCGHSA enrichment
  9. 2026-09-18 00:28 UTCEG score recompute
  10. 2026-09-17 23:34 UTCEG score recompute
  11. 2026-09-17 23:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-93450?
CVE-2026-93450 is a high vulnerability published on September 17, 2026. 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…
When was CVE-2026-93450 disclosed?
CVE-2026-93450 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93450 actively exploited?
CVE-2026-93450 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.7% of all scored CVEs.
What is the CVSS score of CVE-2026-93450?
CVE-2026-93450 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-93450?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93450, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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