Code injection in Orval via unsanitized x-enum-descriptions
CVE-2026-25141 is a critical code-injection vulnerability in Orval, a tool that generates type-safe JavaScript/TypeScript clients from OpenAPI v3 and Swagger v2 specifications. The issue affects versions starting with 7.19.0 and prior to 7.21.0, and 8.x prior to 8.2.0, and is described as an incomplete fix bypass for CVE-2026-23947. The vulnerable behavior occurs when Orval embeds attacker-controlled x-enum-descriptions from an OpenAPI document into generated TypeScript/JavaScript output as comments without fully sanitizing dangerous characters. Reported details indicate that the sanitization logic does not adequately neutralize characters such as '' and '/' in comment context, allowing an attacker to inject the sequence '/' to terminate a comment early and append attacker-controlled code. Additional reporting notes that even with quote escaping in jsStringEscape, arbitrary JavaScript injection remains possible using only a restricted character set such as !+ via JSFuck-style payloads. If a developer or CI pipeline generates code from a malicious or compromised OpenAPI specification, the injected content can be written into generated source files and subsequently executed during build, test, or runtime.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown (only referenced as a critical Orval flaw that can inject code; no additional technical details provided in the content).
Critical code injection in Orval’s OpenAPI-to-TypeScript client generation where unsanitized characters in x-enum-descriptions allow breaking out of generated comment blocks and injecting arbitrary TypeScript/JavaScript into the output.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.