Description
Label Studio is a popular open source data labeling tool. The vulnerability affects all versions of Label Studio prior to 1.11.0 and was tested on version 1.8.2. Label Studio's SSRF protections that can be enabled by setting the `SSRF_PROTECTION_ENABLED` environment variable can be bypassed to access internal web servers. This is because the current SSRF validation is done by executing a single DNS lookup to verify that the IP address is not in an excluded subnet range. This protection can be bypassed by either using HTTP redirection or performing a DNS rebinding attack.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_confirm
https://github.com/HumanSignal/label-studio/security/advisories/GHSA-p59w-9gqw-wj8r
Patch x_refsource_misc
https://github.com/HumanSignal/label-studio/commit/55dd6af4716b92f2bb213fe461d1ffbc380c6a64
Release Notes x_refsource_misc
https://github.com/HumanSignal/label-studio/releases/tag/1.11.0
Scores
CVSS v3
5.3
EPSS
0.0027
EPSS Percentile
50.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (2)
humansignal/label_studio
< 1.11.0
pypi/label-studio
0 - 1.11.0PyPI
Published
Jan 31, 2024
Tracked Since
Feb 18, 2026