CVE-2023-42656Network attack vector

Browser script execution via reflected package payload

Published Sep 20, 2023 · Updated Sep 24, 2024

Reflected XSS in affected Progress MOVEit Transfer 2021.1 through 2023.0 builds allows remote attackers to execute browser scripts. During package composition, the web interface reflects an attacker-controlled payload into its response without neutralizing script content. Exploitation requires a MOVEit user to interact with the crafted payload, and execution remains confined to that user's browser context.

CVSS severity6.1
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in affected Progress MOVEit Transfer 2021.1 through 2023.0 builds allows remote attackers to execute browser scripts. During package composition, the web interface reflects an attacker-controlled payload into its response without neutralizing script content. Exploitation requires a MOVEit user to interact with the crafted payload, and execution remains confined to that user's browser context.

The record

CVE
CVE-2023-42656
Published
Sep 20, 2023
Updated
Sep 24, 2024
Vendor
Progress Software Corporation
Product
MOVEit Transfer
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2021.1.0 (13.1.0) <2021.1.8 (13.1.8)
  2. Affected versionversion=2022.0.0 (14.0.0) <2022.0.8 (14.0.8)
  3. Affected versionversion=2022.1.0 (14.1.0) <2022.1.9 (14.1.9)
  4. Affected versionversion=2023.0.0 (15.0.0) <2023.0.6 (15.0.6)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Progress Software Corporation · MOVEit Transferversion=2021.1.0 (13.1.0) <2021.1.8 (13.1.8); version=2022.0.0 (14.0.0) <2022.0.8 (14.0.8); version=2022.1.0 (14.1.0) <2022.1.9 (14.1.9); version=2023.0.0 (15.0.0) <2023.0.6 (15.0.6)

Published CVSS scores

6.1Progress Software CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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