CVE-2026-96755

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-23. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 9.8Exploit: None knownExposed: 0

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

orval versions 8.14.0 through 8.28.1 contain a code injection vulnerability in the @orval/effect generator that converts OpenAPI schema defaults into template literals. Attackers can inject arbitrary JavaScript expressions via schema defaults containing ${...} syntax, which are executed at module scope when the generated code is built or imported.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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 computed
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

September 23, 2026

Last Modified

September 23, 2026

Advisory Details (6)

Auto-updated Sep 23, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github.
github Patch Available🟡 PoC Available

Import-time RCE in @orval/effect: schema `default` flipped into a live template literal · Advisory · orval-labs/orval · GitHub

https://github.com/orval-labs/orval/security/advisories/GHSA-q7f2-jg6j-r867
generic

orval @orval/effect 8.14.0 through 8.28.1 Code Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/orval-orval-effect-8.14.0-through-8.28.1-code-injection
github_pr Patch Available

fix: sanitize OpenAPI document values before splicing into generated code (zod/effect/hono)

Patch available: orval-labs/orval v8.29.0 (PR #3995 merged 2026-09-04)

https://github.com/orval-labs/orval/pull/3995
github_commit Patch Available

commit d346d94a660e (orval-labs/orval)

Patch available: orval-labs/orval v8.29.0 (contains commit d346d94a660e)

https://github.com/orval-labs/orval/commit/d346d94a660e50a2f8d0f7c17fee2c4c69d8dc23
generic

orval/packages/effect/src/index.ts at v8.28.1 · orval-labs/orval · GitHub

https://github.com/orval-labs/orval/blob/v8.28.1/packages/effect/src/index.ts#L298-L302
generic

GitHub - orval-labs/orval: orval is able to generate client with appropriate type-signatures (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification, either in yaml or json formats. 🍺 · GitHub

https://github.com/orval-labs/orval

Vendor Advisories for CVE-2026-96755(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 6× in last 7d / 6× 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. 2026-09-24 02:55 UTCGHSA enrichment
  2. 2026-09-23 22:36 UTCEG score recompute
  3. 2026-09-23 22:36 UTCGHSA enrichment
  4. 2026-09-23 17:18 UTCEG score recompute
  5. 2026-09-23 16:39 UTCEG score recompute
  6. 2026-09-23 16:39 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-96755?
CVE-2026-96755 is a critical vulnerability published on September 23, 2026. orval versions 8.14.0 through 8.28.1 contain a code injection vulnerability in the @orval/effect generator that converts OpenAPI schema defaults into template literals. Attackers can inject arbitrary JavaScript expressions via schema defaults containing ${...} syntax, which are executed at module…
When was CVE-2026-96755 disclosed?
CVE-2026-96755 was first published in the National Vulnerability Database on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-96755?
CVE-2026-96755 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-96755?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-96755, 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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