CVE-2021-28966
In Ruby through 3.0 on Windows, a remote attacker can submit a crafted path when a Web application handles a parameter with TmpDir.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 58.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
In Ruby through 3.0 on Windows, a remote attacker can submit a crafted path when a Web application handles a parameter with TmpDir.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 58.04% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- ruby-lang/ruby
- Source
- cve@mitre.org
EPSS 58.0% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://hackerone.com/reports/1131465Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0004/Third Party Advisory
- https://hackerone.com/reports/1131465Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210902-0004/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.