Medium severity · published Oct 23, 2026
CVE-2026-89312
AesGcmCryptor.Open passes attacker-controlled nonce to cipher.AEAD.Open without length check, causing panic on wrong-size IV
New
6.9
CVSS
0.3%
EPSS
No
On KEV
Description
`AesGcmCryptor.Open` passed a caller-supplied nonce straight to `cipher.AEAD.Open` without checking its length. The Go standard library **panics** rather than returning an error when a GCM nonce is not exactly `NonceSize()` bytes, so a JWE carrying a wrong-sized IV crashes the decrypting goroutine.
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
EK
Eclipse KeyPont - GOSE · Eclipse Foundation
0.7.3 through 0.13.0-rc1; before 1.0.0-rc4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89312
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89312
github.com
https://github.com/eclipse-keypont/gose/security/advisories/GHSA-xx6h-2jgg-93m2
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