CVE-2026-45112Network attack vector

Service interruption via unterminated Compact Protocol varints

Published Jul 27, 2026 · Updated Jul 27, 2026

Resource exhaustion in Apache Thrift Java bindings 0.19.0 through 0.23.0 allows remote attackers to hold processing threads via crafted varints. The TCompactProtocol readVarint32 and readVarint64 loops keep reading continuation bytes without enforcing their five- and ten-byte maximums. Any network-facing Java client or server that decodes Compact Protocol input is exposed; repeated unterminated values can exhaust worker threads and interrupt service, without reported data access or modification.

CVSS severity6.9
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Apache Thrift Java bindings 0.19.0 through 0.23.0 allows remote attackers to hold processing threads via crafted varints. The TCompactProtocol readVarint32 and readVarint64 loops keep reading continuation bytes without enforcing their five- and ten-byte maximums. Any network-facing Java client or server that decodes Compact Protocol input is exposed; repeated unterminated values can exhaust worker threads and interrupt service, without reported data access or modification.

The record

CVE
CVE-2026-45112
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
The Apache Software Foundation
Product
Apache Thrift
Classifications
CWE-770, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.19.0 <0.24.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Thriftversion=0.19.0 <0.24.0

Published CVSS scores

6.9Apache Software FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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