All vulnerabilities
CVE-2026-89318GHSA-265w-83cm-777q

Eclipse KeyPont - GOSE: JweRsaKeyEncryptionDecryptorImpl.Decrypt panics on attacker-chosen IV length (stdlib GCM.Open reached without nonce-size check)

Eclipse Foundation Eclipse KeyPont - GOSE
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.0.0-rc4Fixed versionCVE List
Published23 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

JweRsaKeyEncryptionDecryptorImpl.Decrypt passed the JWE's initialization vector 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.

Text from CVE List

Affected versions 2

  • Eclipse KeyPont - GOSEaffected: 0.8.0 through 0.13.0-rc1CVE List
  • Eclipse KeyPont - GOSEaffected: all versions before 1.0.0-rc4CVE List

References 1