swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications. Prior to 13.12.2, src/code-gen-process.ts createApiConfig copies servers[0].url into apiConfig.baseUrl, and templates/base/http-clients/fetch-http-client.ejs interpolates apiConfig.baseUrl into the generated HttpClient baseUrl field without escaping, allowing an attacker-controlled OpenAPI spec to inject TypeScript static field code that executes when the generated fetch client module is imported. This issue is fixed in version 13.12.2.
CVE-2026-54662
HIGHPre-NVD 8.38.3—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.3
- EG Score
- 8.3(medium)
- EG Risk
- 42(Track)EG Risk 42/100SSVC: Track
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 computedSeverity83% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 19%
- KEV
- Not listed
Published
July 29, 2026
Last Modified
July 30, 2026
Advisory Details (4)
Auto-updated Jul 29, 2026🔬 Proof of concept available. Patch available. Sources: github_pr, github_commit, github_release, github.
github_release Patch Available
v13.12.2
Patch available: acacode/swagger-typescript-api v13.12.2
https://github.com/acacode/swagger-typescript-api/releases/tag/v13.12.2github_commit Patch Available
commit 306d59acb8ff (acacode/swagger-typescript-api)
Patch available: acacode/swagger-typescript-api v13.12.2 (contains commit 306d59acb8ff)
https://github.com/acacode/swagger-typescript-api/commit/306d59acb8ffbb00f953f807b97234b21f51d9degithub_pr Patch Available
Security/fixing vulnerabilities
Patch available: acacode/swagger-typescript-api v13.12.2 (PR #1779 merged 2026-06-08)
https://github.com/acacode/swagger-typescript-api/pull/1779github Patch Available🟡 PoC Available
Code injection via unescaped `servers[0].url` in fetch http-client template; module-load RCE when run against an attacker-controlled OpenAPI spec · Advisory · acacode/swagger-typescript-api · GitHub
https://github.com/acacode/swagger-typescript-api/security/advisories/GHSA-hqj5-cw9f-rx67Vendor Advisories for CVE-2026-54662(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| swagger-typescript-api | — | 13.12.2 | — |
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× 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.
- 2026-07-30 18:45 UTCEG score recompute
- 2026-07-30 16:28 UTCEPSS rescore
- 2026-07-29 15:21 UTCEG score recompute
- 2026-07-29 14:48 UTCEG score recompute
- 2026-07-29 14:47 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-54662?
CVE-2026-54662 is a high vulnerability published on July 29, 2026. swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications. Prior to 13.12.2, src/code-gen-process.ts createApiConfig copies servers[0].url into apiConfig.baseUrl, and templates/base/http-clients/fetch-http-client.ejs interpolates apiConfig.baseUrl into the…
When was CVE-2026-54662 disclosed?
CVE-2026-54662 was first published in the National Vulnerability Database on July 29, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54662 actively exploited?
CVE-2026-54662 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.9% of all scored CVEs.
What is the CVSS score of CVE-2026-54662?
CVE-2026-54662 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-54662?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54662, 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
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-54662
Is Your Infrastructure Affected by CVE-2026-54662?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.