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TI-2026-74353 Aliases CVE-2026-102476

Improper certificate validation in Eclipse Vert.x HTTP client

Priority MEDIUM 41CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-295.

Summary

Eclipse Vert.x versions from 5.0.0 through 5.0.12, from 5.1.0 through 5.1.9, and 5.2.0 are affected. The Vert.x HTTP client caches SSL contexts under a key that does not reflect all SSL properties, so a request for a context with hostname validation can return one that ignores it (CWE-295). A remote attacker with no privileges and no user interaction who can position themselves on the network path may be able to read and modify traffic.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP client relies on an SSL context for efficiency purpose, the key of this cache should reflect entirely the SSL semantics of the desired SSL properties. It is possible for a client to ask for an SSL context and obtain an SSL context with weaker properties, for instance a context with hostname validation and obtain a context ignoring hostname validation. The impacted component is io.vertx:vertx-core.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00226 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 Vert.x5.0.0 – 5.0.12; 5.1.0 – 5.1.9; 5.2.0—No fix listedCNA
  • Eclipse Vert.x VendorEclipse Foundation Affected 5.0.0 – 5.0.12; 5.1.0 – 5.1.9; 5.2.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*——Eclipse Foundation

Remediation

The sources list no fixed version for Eclipse Vert.x.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-102476
  2. 2026-10-16 Priority changed: MEDIUM → LOW
  3. 2026-10-16 Weakness changed · CISA ADP
  4. 2026-10-16 CISA SSVC decision points changed
  5. 2026-10-16 Priority changed: LOW → MEDIUM
  6. 2026-11-06 Affected versions changed · Red Hat
  7. 2026-11-06 CVSS score added · Red Hat

References

Other 2

  • 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