CVE-2024-1021Public exploitNetwork attack vector

Server-side request forgery via unchecked URL destination

Published Jan 29, 2024 · Updated Jun 6, 2025

SSRF in REBUILD 3.5.0 through 3.5.5 allows remote authenticated users to make server-side requests via the HTTP Request Handler. The readRawText function accepts the url argument as a request destination without ensuring that it targets an expected host. Valid application credentials are required, and resulting requests can reach resources available from the server's network position.

CVSS severity6.3
Medium
EPSS probability34.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in REBUILD 3.5.0 through 3.5.5 allows remote authenticated users to make server-side requests via the HTTP Request Handler. The readRawText function accepts the url argument as a request destination without ensuring that it targets an expected host. Valid application credentials are required, and resulting requests can reach resources available from the server's network position.

The record

CVE
CVE-2024-1021
Published
Jan 29, 2024
Updated
Jun 6, 2025
Vendor
Shanghai Ruifang Technology Co., Ltd.
Product
REBUILD
Classifications
CWE-918, T1090
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 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=3.5.0
  2. Affected versionversion=3.5.1
  3. Affected versionversion=3.5.2
  4. Affected versionversion=3.5.3
  5. Affected versionversion=3.5.4
  6. Affected versionversion=3.5.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shanghai Ruifang Technology Co., Ltd. · REBUILDversion=3.5.0; version=3.5.1; version=3.5.2; version=3.5.3; version=3.5.4; version=3.5.5

Published CVSS scores

6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 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-918Server-Side Request Forgery (SSRF)
T1090Proxy

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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