CSRF in Backdropcms Backdrop
CVE-2021-45268
A Cross Site Request Forgery (CSRF) vulnerability exists in Backdrop CMS 1.20, which allows Remote Attackers to gain Remote Code Execution (RCE) on the Hosting Webserver via uploading a maliciously add-on with crafted PHP file. NOTE: the vendor disputes this because the attack requires a session cookie of a high-privileged authenticated user who is entitled to install arbitrary add-ons
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Backdropcms Backdrop — versions 1.20.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/50323 (VDB Entry, Third Party Advisory)
- github.com/V1n1v131r4/CSRF-to-RCE-on-Backdrop-CMS (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-45268?
- CVE-2021-45268 is a high-severity vulnerability in Backdropcms Backdrop, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2022-02-03.
- How severe is CVE-2021-45268?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-45268 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.