Is there a public exploit for CVE-2026-89319?

No public exploit for CVE-2026-89319 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-89319?

CVE-2026-89319 scores CVSS 6.3 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.21%.

What does CVE-2026-89319 affect?

CVE-2026-89319 affects Eclipse Foundation Eclipse KeyPont - GOSE.

6.3 Medium

JweDirectDecryptorBlock.Decrypt read a 64-bit plaintext length from the thalesaad protected-header field and used it without any validation.

CVE-2026-89319

JweDirectDecryptorBlock.Decrypt read a 64-bit plaintext length from the thalesaad protected-header field and used it without any validation. A truncated field panics binary.BigEndian.Uint64, an oversized value drives an unbounded allocation, and a value larger than the decrypted block panics with a slice-bounds error.

Assessment

CVSS: 6.3 (v4.0)
Severity: Medium
EPSS: 0.21% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 23 October 2026
Last updated: 2 November 2026
Affected: Eclipse Foundation · Eclipse KeyPont - GOSE
Assigner: eclipse

CVSS vectorCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://github.com/eclipse-keypont/gose/security/advisories/GHSA-4gj8-hg2r-gw6q

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