Medium severity · published Jun 3, 2025
CVE-2025-24015
Deno's AES GCM authentication tags are not verified
5.3
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
deno · denoland
>= 1.46.0, < 2.1.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-24015
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-24015
Patch
https://github.com/denoland/deno/commit/0d1beed
Patch
https://github.com/denoland/deno/commit/4f27d7cdc02e3edfb9d36275341fb8185d6e99ed
Patch
https://github.com/denoland/deno/commit/a4003a5292bd0affefad3ecb24a8732886900f67
Exploit
https://github.com/denoland/deno/security/advisories/GHSA-2x3r-hwv5-p32x
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