CVE-2021-21250
In OneDev before version 4.0.3, there is a critical vulnerability which may lead to arbitrary file read.
Does this matter?
Lower severity and a low EPSS score (0.94%). Track it; it rarely justifies an emergency change on its own.
Description
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability which may lead to arbitrary file read. When BuildSpec is provided in XML format, the spec is processed by XmlBuildSpecMigrator.migrate(buildSpecString); which processes the XML document without preventing the expansion of external entities. These entities can be configured to read arbitrary files from the file system and dump their contents in the final XML document to be migrated. If the files are dumped in properties included in the YAML file, it will be possible for an attacker to read them. If not, it is possible for an attacker to exfiltrate the contents of these files Out Of Band. This issue was addressed in 4.0.3 by ignoring ENTITY instructions in xml file.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.94% probability · 61th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-538
- Affected
- onedev project/onedev
- Source
- security-advisories@github.com
EPSS 0.9% 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://github.com/theonedev/onedev/commit/9196fd795e87dab069b4260a3590a0ea886e770fPatch, Third Party Advisory
- https://github.com/theonedev/onedev/security/advisories/GHSA-9pph-8gfc-6w2rThird Party Advisory
- https://github.com/theonedev/onedev/commit/9196fd795e87dab069b4260a3590a0ea886e770fPatch, Third Party Advisory
- https://github.com/theonedev/onedev/security/advisories/GHSA-9pph-8gfc-6w2rThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.