CVE-2021-21234
In spring-boot-actuator-logview before version 0.2.13 there is a directory traversal vulnerability.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 21.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
spring-boot-actuator-logview in a library that adds a simple logfile viewer as spring boot actuator endpoint. It is maven package "eu.hinsch:spring-boot-actuator-logview". In spring-boot-actuator-logview before version 0.2.13 there is a directory traversal vulnerability. The nature of this library is to expose a log file directory via admin (spring boot actuator) HTTP endpoints. Both the filename to view and a base folder (relative to the logging folder root) can be specified via request parameters. While the filename parameter was checked to prevent directory traversal exploits (so that `filename=../somefile` would not work), the base folder parameter was not sufficiently checked, so that `filename=somefile&base=../` could access a file outside the logging base directory). The vulnerability has been patched in release 0.2.13. Any users of 0.2.12 should be able to update without any issues as there are no other changes in that release. There is no workaround to fix the vulnerability other than updating or removing the dependency. However, removing read access of the user the application is run with to any directory not required for running the application can limit the impact. Additionally, access to the logview endpoint can be limited by deploying the application behind a reverse proxy.
- CVSS 3.1
- 7.7 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- EPSS
- 21.01% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- spring-boot-actuator-logview project/spring-boot-actuator-logview
- Source
- security-advisories@github.com
EPSS 21.0% 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
- https://github.com/lukashinsch/spring-boot-actuator-logview/commit/1c76e1ec3588c9f39e1a94bf27b5ff56eb8b17d6Patch, Third Party Advisory
- https://github.com/lukashinsch/spring-boot-actuator-logview/commit/760acbb939a8d1f7d1a7dfcd51ca848eea04e772Patch, Third Party Advisory
- https://github.com/lukashinsch/spring-boot-actuator-logview/security/advisories/GHSA-p4q6-qxjx-8jgpThird Party Advisory
- https://search.maven.org/artifact/eu.hinsch/spring-boot-actuator-logviewThird Party Advisory
- https://github.com/lukashinsch/spring-boot-actuator-logview/commit/1c76e1ec3588c9f39e1a94bf27b5ff56eb8b17d6Patch, Third Party Advisory
- https://github.com/lukashinsch/spring-boot-actuator-logview/commit/760acbb939a8d1f7d1a7dfcd51ca848eea04e772Patch, Third Party Advisory
- https://github.com/lukashinsch/spring-boot-actuator-logview/security/advisories/GHSA-p4q6-qxjx-8jgpThird Party Advisory
- https://search.maven.org/artifact/eu.hinsch/spring-boot-actuator-logviewThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.