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CVE-2026-121561VulnerabilityPublished

Label Studio before 1.23.2 (label-studio-sdk before 2.1.2) contains a server-side request forgery vulnerability that

Source GCVE Database

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Authoritative record:CVE-2026-121561· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium : upgrade to 1.23.2 when convenient.

Data as of 3 Nov 2026, 19:43 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.06.3
CNA (VulnCheck)CVSS 3.17.7
CNACVSS 4.06.3
Patch
Available – fixed in 1.23.2, 2.1.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Upgrade label-studio to 1.23.2; label-studio-sdk to 2.1.2.

Affected software

ProductAffectedFixed in
HumanSignallabel-studioAffected
  • <1.23.2
Fixed in
  • 1.23.2
HumanSignallabel-studio-sdkAffected
  • <2.1.2
Fixed in
  • 2.1.2
PyPIlabel-studiopkg:pypi/label-studioOther threatsAffected
  • <1.23.2
Fixed in
  • 1.23.2
PyPIlabel-studio-sdkpkg:pypi/label-studio-sdkOther threatsAffected
  • <2.1.2
Fixed in
  • 2.1.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in Label Studio version 1.23.2 and label-studio-sdk version 2.1.2. Users should upgrade to these versions or later to remediate the vulnerability. Since this is not a cloud service, patching the affected software is necessary. No vendor advisory content was provided to indicate alternative mitigations or that no action is required.

Description

Label Studio versions before 1.23.2 and label-studio-sdk before 2.1.2 contain a server-side request forgery (SSRF) vulnerability. This flaw allows authenticated users to read internal URLs by exploiting image-bearing export formats. Attackers can import tasks with images pointing to internal services, export them in formats like YOLO or COCO to read responses, and spoof the Host header to capture the organization owner's API token.

References

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