CVE-2023-1613Public exploitNetwork attack vector

User redirection via unvalidated feed image URL

Published Mar 23, 2023 · Updated Aug 2, 2024

Open redirect in REBUILD 3.2.3 and earlier allows remote authenticated users to redirect other users through a crafted feed image. FeedsPostController.publish accepts an attacker-chosen image URL, and FileDownloader.viewImg redirects to the extracted path without restricting its destination. Exploitation requires feed-publishing access and a user to click the resulting download link, which navigates the browser to the chosen site.

CVSS severity6.1
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

Open redirect in REBUILD 3.2.3 and earlier allows remote authenticated users to redirect other users through a crafted feed image. FeedsPostController.publish accepts an attacker-chosen image URL, and FileDownloader.viewImg redirects to the extracted path without restricting its destination. Exploitation requires feed-publishing access and a user to click the resulting download link, which navigates the browser to the chosen site.

The record

CVE
CVE-2023-1613
Published
Mar 23, 2023
Updated
Aug 2, 2024
Vendor
Shanghai Ruifang Technology Co., Ltd.
Product
REBUILD
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <=3.2.3
  2. Affected versionversion=3.2.0
  3. Affected versionversion=3.2.1
  4. Affected versionversion=3.2.2
  5. Affected versionversion=3.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shanghai Ruifang Technology Co., Ltd. · REBUILDversion=0 <=3.2.3; version=3.2.0; version=3.2.1; version=3.2.2; version=3.2.3

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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