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Vulnerability record · CVE-2026-47161 · published 27 May 2026

CVE-2026-47161: Deserialization of untrusted data vulnerability

RELATE is a web-based courseware package. Prior to commit d66ba5659b459bf1ba56b7109b5f9ecf197cbefb, RELATE LMS configures its Celery workers to accept and deserialize untrusted 'pickle' data. An attacker who can reach the message broker can execute arbitrary commands on the host server. Combined with missing network isolation in the code execution sandbox, this allows an authenticated student to achieve full Remote Code Execution (RCE) on the host system. Commit d66ba5659b459bf1ba56b7109b5f9ecf197cbefb fixes the issue.

8.7 CVSS 4.0 High EPSS 0.87% · top 42.7% CWE-502 · Deserialization of untrusted data Deferred
8.7CVSS 4.0 base score
0.87%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

RELATE is a web-based courseware package. Prior to commit d66ba5659b459bf1ba56b7109b5f9ecf197cbefb, RELATE LMS configures its Celery workers to accept and deserialize untrusted 'pickle' data. An attacker who can reach the message broker can execute arbitrary commands on the host server. Combined with missing network isolation in the code execution sandbox, this allows an authenticated student to achieve full Remote Code Execution (RCE) on the host system. Commit d66ba5659b459bf1ba56b7109b5f9ecf197cbefb fixes the issue.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/inducer/relate/commit/d66ba5659b459bf1ba56b7109b5f9ecf197cbefb
https://github.com/inducer/relate/security/advisories/GHSA-4mwh-mwv4-m252
https://github.com/inducer/relate/security/advisories/GHSA-4mwh-mwv4-m252

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Source: NIST National Vulnerability Database (record CVE-2026-47161), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.