CVE-2024-1021Rebuild SSRF
A vulnerability, which was classified as critical, has been found in Rebuild up to 3.5.5.
Published Jan 29, 2024 · Updated Oct 21, 2026
Key Facts
Patch immediately- CVE-2024-1021 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Rebuild (Ruifang-Tech).
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jan 29, 2024. No public exploit code is known.
- EPSS estimates a 35% probability of exploitation in the next 30 days.
- Fixed versions are available, including Rebuild <=3.5.5, Rebuild 3.5.5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
35%
Higher than 98.4% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
58/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jan 29, 2024
0 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
11
Reports of active use
Advisories And Exploit References
Description
A vulnerability, which was classified as critical, has been found in Rebuild up to 3.5.5. Affected by this issue is the function readRawText of the component HTTP Request Handler. The manipulation of the argument url leads to server-side request forgery. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-252290 is the identifier assigned to this vulnerability.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Jan 29, 2024 | n/a | Not reported |
| Industry KEV feed | Jan 29, 2024 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| RebuildRuifang-Tech | >= 3.5.0 | 3.5.5 |
Patched Releases
Rebuild
<=3.5.5
Timeline
Publicly disclosed
Jan 29, 2024
Added to CIRCL KEV
Jan 29, 2024
Added to Industry KEV feed
Jan 29, 2024
Last updated
Oct 21, 2026
Weakness Type
- CWE-918 Server-Side Request Forgery (SSRF)
References
- advisorycve.org · CVERecord
- advisorynvd.nist.gov · CVE-2024-1021
- advisoryvuldb.com
- advisoryvuldb.com
- exploitVulnCheck exploitation report
FAQ
Common Questions.
A vulnerability, which was classified as critical, has been found in Rebuild up to 3.5.5.
Affected: Rebuild (Ruifang-Tech) versions >= 3.5.0. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jan 29, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Rebuild <=3.5.5, Rebuild 3.5.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2024-1021 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo