CVE-2026-61485

Memory-exhaustion crash via unbounded index allocation

Published Aug 5, 2026 · Updated Aug 5, 2026

Excessive memory allocation in Apache Lucy allows context-dependent attackers to crash applications through a crafted search index. Freezer deserialization accepts a size value read by InStream from the index and allocates the declared amount without enforcing an upper bound. Exploitation requires an embedding application to open an attacker-controlled index, and memory exhaustion interrupts only that application or its service.

CVSS severity7.5
High
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Excessive memory allocation in Apache Lucy allows context-dependent attackers to crash applications through a crafted search index. Freezer deserialization accepts a size value read by InStream from the index and allocates the declared amount without enforcing an upper bound. Exploitation requires an embedding application to open an attacker-controlled index, and memory exhaustion interrupts only that application or its service.

The record

CVE
CVE-2026-61485
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
The Apache Software Foundation
Product
Apache Lucy
Classifications
CWE-789, T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

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  1. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache Lucyversion=0 <=*

Published CVSS scores

7.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-789Memory Allocation with Excessive Size Value
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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