CVE-2021-21659
Jenkins URLTrigger Plugin 0.48 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 66.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Jenkins URLTrigger Plugin 0.48 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 66.77% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- jenkins/urltrigger
- Source
- jenkinsci-cert@googlegroups.com
EPSS 66.8% since 26 October 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
- http://www.openwall.com/lists/oss-security/2021/05/25/3Mailing List, Third Party Advisory
- https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2341Vendor Advisory
- http://www.openwall.com/lists/oss-security/2021/05/25/3Mailing List, Third Party Advisory
- https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2341Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.