CVE-2026-96757 Orval - Stored XSS

Orval < 8.29.0 contains a stored XSS caused by failure to escape OpenAPI media-type keys in single-quoted Content-Type string literals, letting attackers inject JavaScript executed in generated fetch operations or mock resolvers, exploit requires crafted OpenAPI specifications.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.57% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Update to version 8.29.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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