Vulnerability Description
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Versions 1.46.0 through 2.1.6 have an issue that affects AES-256-GCM and AES-128-GCM in Deno in which the authentication tag is not being validated. This means tampered ciphertexts or incorrect keys might not be detected, which breaks the guarantees expected from AES-GCM. Older versions of Deno correctly threw errors in such cases, as does Node.js. Without authentication tag verification, AES-GCM degrades to essentially CTR mode, removing integrity protection. Authenticated data set with set_aad is also affected, as it is incorporated into the GCM hash (ghash) but this too is not validated, rendering AAD checks ineffective. Version 2.1.7 includes a patch that addresses this issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Deno | Deno | >= 1.46.0, < 2.1.7 |
Related Weaknesses (CWE)
References
- https://github.com/denoland/deno/commit/0d1beedPatch
- https://github.com/denoland/deno/commit/4f27d7cdc02e3edfb9d36275341fb8185d6e99edPatch
- https://github.com/denoland/deno/commit/a4003a5292bd0affefad3ecb24a8732886900f67Patch
- https://github.com/denoland/deno/security/advisories/GHSA-2x3r-hwv5-p32xExploitPatchVendor Advisory
- https://github.com/denoland/deno/security/advisories/GHSA-2x3r-hwv5-p32xExploitPatchVendor Advisory
FAQ
What is CVE-2025-24015?
CVE-2025-24015 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Deno is a JavaScript, TypeScript, and WebAssembly runtime. Versions 1.46.0 through 2.1.6 have an issue that affects AES-256-GCM and AES-128-GCM in Deno in which the authentication tag is not being val...
How severe is CVE-2025-24015?
CVE-2025-24015 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-24015?
Check the references section above for vendor advisories and patch information. Affected products include: Deno Deno.