CVE-2024-31454Public exploitNetwork attack vector

File tampering via unrestricted upload PATCH

Published Apr 9, 2024 · Updated Sep 4, 2024

File integrity violation in PsiTransfer before 2.2.0 allows remote attackers to append arbitrary content to uploaded files via PATCH requests. The /files/:id upload endpoint accepts an unauthenticated PATCH body for a completed file and appends it without checking that the upload bucket is locked. An attacker must obtain a distribution's file identifier, and later downloaders can receive content altered with malicious or phishing material.

CVSS severity6.5
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File integrity violation in PsiTransfer before 2.2.0 allows remote attackers to append arbitrary content to uploaded files via PATCH requests. The /files/:id upload endpoint accepts an unauthenticated PATCH body for a completed file and appends it without checking that the upload bucket is locked. An attacker must obtain a distribution's file identifier, and later downloaders can receive content altered with malicious or phishing material.

The record

CVE
CVE-2024-31454
Published
Apr 9, 2024
Updated
Sep 4, 2024
Vendor
psi-4ward
Product
PsiTransfer
Classifications
CWE-434, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2024Record 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 <2.2.0
  2. Affected versionversion=< 2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

psi-4ward · PsiTransferversion=0 <2.2.0; version=< 2.2.0

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A: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 exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1565.001Stored Data Manipulation

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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