CVE-2021-40103
HIGHCVSS 7.5/10EPSS 1.44%
Last modified
CVE-2021-40103 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Concrete CMS through 8.5.5. Path Traversal can lead to Arbitrary File Reading and SSRF.. EPSS estimates a 1.44% chance of exploitation in the next 30 days.
Description
An issue was discovered in Concrete CMS through 8.5.5. Path Traversal can lead to Arbitrary File Reading and SSRF.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Concretecms | Concrete Cms | <= 8.5.5 |
References
- https://documentation.concretecms.org/developers/introduction/version-history/856-release-notesRelease Notes, Vendor Advisory
- https://hackerone.com/reports/1102211Permissions Required, Third Party Advisory
- https://documentation.concretecms.org/developers/introduction/version-history/856-release-notesRelease Notes, Vendor Advisory
- https://hackerone.com/reports/1102211Permissions Required, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40103?
An issue was discovered in Concrete CMS through 8.5.5. Path Traversal can lead to Arbitrary File Reading and SSRF.
How severe is CVE-2021-40103?
CVE-2021-40103 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.44% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40103?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-40098An issue was discovered in Concrete CMS through 8.5.5. Path …9.8
- CVE-2021-40099An issue was discovered in Concrete CMS through 8.5.5. Fetch…7.2
- CVE-2021-4010A flaw was found in xorg-x11-server in versions before 21.1.…7.8
- CVE-2021-40100An issue was discovered in Concrete CMS through 8.5.5. Store…5.4
- CVE-2021-40101An issue was discovered in Concrete CMS before 8.5.7. The Da…7.2
- CVE-2021-40102An issue was discovered in Concrete CMS through 8.5.5. Arbit…9.1
- CVE-2021-40104An issue was discovered in Concrete CMS through 8.5.5. There…7.5
- CVE-2021-40105An issue was discovered in Concrete CMS through 8.5.5. There…6.1
- CVE-2021-40106An issue was discovered in Concrete CMS through 8.5.5. There…6.1
- CVE-2021-40108An issue was discovered in Concrete CMS through 8.5.5. The C…8.8
- CVE-2021-40109A SSRF issue was discovered in Concrete CMS through 8.5.5. U…6.4
- CVE-2021-4011A flaw was found in xorg-x11-server in versions before 21.1.…7.8
Are you affected by CVE-2021-40103?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST