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TI-2026-79599 Aliases CVE-2026-89315

Panic in Eclipse KeyPont - GOSE JWT claim marshalling

Priority HIGH 70CWE-248Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-248.

Summary

Eclipse KeyPont - GOSE from 0.7.3 through 0.13.0-rc1 and from 0 before 1.0.0-rc4 is affected. JwtClaims.MarshalJSON builds a Go struct at runtime with reflect.StructOf, which panics when a claim name is not a valid Go identifier or duplicates another field (CWE-248). A remote attacker without privileges can cause a limited availability impact using ordinary JWT claim names.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

`JwtClaims.MarshalJSON` built a Go struct at runtime with `reflect.StructOf`, synthesising a field named `"A" + claimName` for each untyped claim. `reflect.StructOf` **panics** when a field name is not a valid Go identifier, or when it duplicates another field. Both conditions are reachable from ordinary JWT claim names.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00253 16th percentileScored 2026-11-07
Fix Fixed Eclipse KeyPont - GOSE (Eclipse Foundation): 1.0.0-rc4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Eclipse FoundationEclipse KeyPont - GOSE0.7.3 – 0.13.0-rc1—No fix listedCNA
Eclipse FoundationEclipse KeyPont - GOSEbefore 1.0.0-rc41.0.0-rc4Patch availableCNA
  • Eclipse KeyPont - GOSE VendorEclipse Foundation Affected 0.7.3 – 0.13.0-rc1 Fixed in — No fix listed CNA
  • Eclipse KeyPont - GOSE VendorEclipse Foundation Affected before 1.0.0-rc4 Fixed in 1.0.0-rc4 Patch available CNA

Remediation

Eclipse KeyPont - GOSE is fixed in 1.0.0-rc4. The sources list no fixed version for Eclipse KeyPont - GOSE 0.7.3 through 0.13.0-rc1.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

  • Fix · CNA Eclipse KeyPont - GOSE (Eclipse Foundation) Fixed in 1.0.0-rc4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Eclipse KeyPont - GOSE 1.0.0-rc4

    7 records Highest priority Priority HIGH 3 HIGH, 3 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-79602 Panic on malformed JWE IV length in Eclipse KeyPont GOSEPriority HIGH 70
    • TI-2026-79598 Slow duplicate key_ops check in Eclipse KeyPont GOSE exhausts CPUPriority HIGH 70
    • TI-2026-79601 Eclipse KeyPont GOSE accepts JWS tokens with unenforced crit headerPriority MEDIUM 61
    Show all 7 records →

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-89315
  2. 2026-10-23 Priority changed: MEDIUM → LOW
  3. 2026-11-02 CISA SSVC decision points changed
  4. 2026-11-02 Priority changed: LOW → HIGH

References

Other 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2026-81947 Unauthenticated command injection in Eclipse Che che-machine-exec CVSS 3.1CRITICAL 9.8
  • TI-2026-13216 CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components CVSS 3.1CRITICAL 9.8
  • TI-2026-06514 Path traversal in Eclipse BaSyx CVSS 3.1CRITICAL 10.0
  • TI-2026-01382 In the Eclipse Theia Website repository, the GitHub Actions workflow… CVSS 3.1CRITICAL 10.0
  • TI-2026-74697 Authentication bypass in Eclipse Jetty EthereumAuthenticator CVSS 4.0CRITICAL 9.3
See all 466 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences