CVE-2024-1021
High PUBLISHEDRebuild HTTP Request readRawText server-side request forgery
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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. Eine kritische Schwachstelle wurde in Rebuild bis 3.5.5 entdeckt. Davon betroffen ist die Funktion readRawText der Komponente HTTP Request Handler. Mittels dem Manipulieren des Arguments url mit unbekannten Daten kann eine server-side request forgery-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk erfolgen. Der Exploit steht zur öffentlichen Verfügung.
- CVE Published
- Jan 29, 2024
- Exploitation Reported
- Jan 29, 2024
- CVSS
- 6.3 Medium
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
Rebuild
|
3.5.0 |
Affected |
| n/a |
Rebuild
|
3.5.1 |
Affected |
| n/a |
Rebuild
|
3.5.2 |
Affected |
| n/a |
Rebuild
|
3.5.3 |
Affected |
| n/a |
Rebuild
|
3.5.4 |
Affected |
| n/a |
Rebuild
|
3.5.5 |
Affected |
CVE References
- Exploit — yuque.com yuque.com · Exploit https://www.yuque.com/mailemonyeyongjuan/tha8tr/yemvnt5uo53gfem5
- Technical Description — vuldb.com vuldb.com · Technical Description https://vuldb.com/?id.252290
- Signature — vuldb.com vuldb.com · Signature https://vuldb.com/?ctiid.252290
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2024-01-29 22:00 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-1021.yaml | Apr 25, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
AV:N/AC:L/Au:S/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2024-01-29 22:00:08 UTC · The Shadowserver
Proof of concept available
Recorded 2026-06-12 14:20:44 UTC · Nuclei Templates
Weaknesses (CWE)
-
Server-Side Request Forgery (SSRF)
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-1021.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:20 UTC about 1 month ago14:20 UTC · about 1 month ago
Public PoC available
Public proof-of-concept code published
-
00:00 UTC about 1 year ago00:00 UTC · about 1 year ago
Nuclei template available
Scanner coverage available
-
22:00 UTC over 2 years ago22:00 UTC · over 2 years ago
CVE published
Vulnerability disclosed publicly
-
22:00 UTC over 2 years ago22:00 UTC · over 2 years ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
10:47 UTC over 2 years ago10:47 UTC · over 2 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2024-1021
{
"cve_id": "CVE-2024-1021",
"title": "Rebuild HTTP Request readRawText server-side request forgery",
"affected_vendor": "Rebuild",
"affected_product": "Rebuild",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 6.3,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}