CVE-2024-26308Public exploit

Application crash via unbounded Pack200 attribute parsing

Published Feb 19, 2024 · Updated Mar 27, 2025

Resource exhaustion in Apache Commons Compress 1.21 through 1.25.0 allows local users to crash an application via a malformed Pack200 file. The Pack200 NewAttributeBands.readNextUnionCase parser loops while appending an unterminated attribute layout to a growing StringBuffer until the JVM heap is exhausted. An application must process attacker-supplied Pack200 content, and the resulting OutOfMemoryError can terminate the hosting Java process.

CVSS severity5.5
Medium
EPSS probability0.90%
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 Commons Compress 1.21 through 1.25.0 allows local users to crash an application via a malformed Pack200 file. The Pack200 NewAttributeBands.readNextUnionCase parser loops while appending an unterminated attribute layout to a growing StringBuffer until the JVM heap is exhausted. An application must process attacker-supplied Pack200 content, and the resulting OutOfMemoryError can terminate the hosting Java process.

The record

CVE
CVE-2024-26308
Published
Feb 19, 2024
Updated
Mar 27, 2025
Vendor
The Apache Software Foundation
Product
Apache Commons Compress
Classifications
CWE-770, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record 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=1.21 <1.26.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Commons Compressversion=1.21 <1.26.0

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

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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