CVE-2024-47554Network attack vector

Application interruption via XML regex backtracking

Published Oct 3, 2024 · Updated Jan 31, 2025

Uncontrolled resource consumption in Apache Commons IO 2.0 through 2.13.0 allows remote attackers to exhaust CPU via crafted XML input. XmlStreamReader applies an overlapping greedy regular expression to the untrusted XML prolog, causing excessive backtracking during encoding detection. Reachability depends on a consuming application passing attacker-controlled XML to XmlStreamReader; processor saturation interrupts that application without reported data exposure or alteration.

CVSS severity4.3
Medium
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Apache Commons IO 2.0 through 2.13.0 allows remote attackers to exhaust CPU via crafted XML input. XmlStreamReader applies an overlapping greedy regular expression to the untrusted XML prolog, causing excessive backtracking during encoding detection. Reachability depends on a consuming application passing attacker-controlled XML to XmlStreamReader; processor saturation interrupts that application without reported data exposure or alteration.

The record

CVE
CVE-2024-47554
Published
Oct 3, 2024
Updated
Jan 31, 2025
Vendor
The Apache Software Foundation
Product
Apache Commons IO
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Jan 31, 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?

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  1. Affected versionversion=2.0 <2.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Commons IOversion=2.0 <2.14.0

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

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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