CVE-2022-31005Public exploitNetwork attack vector

Application crash via unchecked range length

Published May 31, 2022 · Updated Apr 22, 2025

Integer overflow in Vapor FileMiddleware before 4.60.3 allows remote attackers to crash applications with a crafted HTTP Range header. FileIO computes the requested byte count as the range end minus its start plus one without checking whether the final addition overflows an Int. The request is unauthenticated and network-reachable, but only applications that enable FileMiddleware to serve files expose the crash path.

CVSS severity7.5
High
EPSS probability2.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Vapor FileMiddleware before 4.60.3 allows remote attackers to crash applications with a crafted HTTP Range header. FileIO computes the requested byte count as the range end minus its start plus one without checking whether the final addition overflows an Int. The request is unauthenticated and network-reachable, but only applications that enable FileMiddleware to serve files expose the crash path.

The record

CVE
CVE-2022-31005
Published
May 31, 2022
Updated
Apr 22, 2025
Vendor
Vapor
Product
Vapor
Classifications
CWE-190, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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=< 4.60.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vapor · Vaporversion=< 4.60.3

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS: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

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

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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