CVE-2021-20745
Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.96% probability · 61th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- inkdrop/inkdrop
- Source
- vultures@jpcert.or.jp
EPSS 1.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://docs.inkdrop.app/releases/5.3.1Release Notes, Vendor Advisory
- https://jvn.jp/en/jp/JVN29949691/index.htmlThird Party Advisory
- https://www.inkdrop.app/Product, Vendor Advisory
- https://docs.inkdrop.app/releases/5.3.1Release Notes, Vendor Advisory
- https://jvn.jp/en/jp/JVN29949691/index.htmlThird Party Advisory
- https://www.inkdrop.app/Product, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.