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TI-2024-09773 Aliases CVE-2024-10550GHSA-7qq7-pvm9-x8rf

Denial of Service by ReDOS in h2oai/h2o-3

Priority HIGH 72CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1333.

Summary

A vulnerability in the `/3/ParseSetup` endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service (DoS) attack. The endpoint applies a user-specified regular expression to a user-controllable string. This can be exploited by an attacker to cause inefficient regular expression complexity, leading to the exhaustion of server resources and making the server unresponsive.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00637 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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
h2oaih2oai/h2o-3up to latest—No fix listedCNA
—h2o (PyPI)3.30.0.7 – 3.46.0.1—No fix listedGHSA-7qq7-pvm9-x8rf
—ai.h2o:h2o-core (Maven)3.30.0.7 – 3.46.0.1—No fix listedGHSA-7qq7-pvm9-x8rf
  • h2oai/h2o-3 Vendorh2oai Affected up to latest Fixed in — No fix listed CNA
  • h2o (PyPI) Vendor— Affected 3.30.0.7 – 3.46.0.1 Fixed in — No fix listed GHSA-7qq7-pvm9-x8rf
  • ai.h2o:h2o-core (Maven) Vendor— Affected 3.30.0.7 – 3.46.0.1 Fixed in — No fix listed GHSA-7qq7-pvm9-x8rf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:h2o:h2o:3.46.0.1:*:*:*:*:*:*:*3.46.0.1Vulnerableh2oai
  • cpe:2.3:a:h2o:h2o:3.46.0.1:*:*:*:*:*:*:* Versions 3.46.0.1 Vulnerable ·h2oai

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-10550
  2. 2026-10-03 Alias added: GHSA-7qq7-pvm9-x8rf
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 1

Advisory 1

Other 2

  • TI-2025-05944 Deserialization Vulnerability in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
  • TI-2024-09776 Jdbc Deserialization in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
  • TI-2024-30727 H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to… CVSS 3.1CRITICAL 9.1
  • TI-2026-03424 Remote Code Execution in h2oai/h2o-3 CVSS 3.1CRITICAL 9.8
  • TI-2024-07992 Arbitrary File Overwrite in h2oai/h2o-3 CVSS 3.0HIGH 8.2
  • TI-2023-06020 External Control of File Name or Path in h2oai/h2o-3 CVSS 3.1HIGH 8.2
See all 29 →

Sources

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