CVE-2021-47935

HIGH

Sentry 8.2.0 Remote Code Execution via Pickle Deserialization

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47935. PoCs published by Mohin Paramasivam.

AI-analyzed exploit summary This exploit leverages a deserialization vulnerability in Sentry's audit log functionality to achieve authenticated remote code execution. It crafts a malicious pickle payload containing a reverse shell command, which is then submitted via an authenticated admin session.

Description

Sentry 8.2.0 contains a remote code execution vulnerability that allows authenticated superusers to execute arbitrary commands by injecting malicious pickle-serialized objects through the audit log entry data parameter. Attackers can submit crafted POST requests to the admin audit log endpoint with base64-encoded compressed pickle payloads in the data field to achieve code execution with application privileges.

Exploits (1)

exploitdb WORKING POC
by Mohin Paramasivam · pythonwebappspython
https://www.exploit-db.com/exploits/50318

This exploit leverages a deserialization vulnerability in Sentry's audit log functionality to achieve authenticated remote code execution. It crafts a malicious pickle payload containing a reverse shell command, which is then submitted via an authenticated admin session.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Sentry < 8.2.2
Auth required
Prerequisites: Authenticated admin/superuser access · Valid credentials · Network access to the target
devstral-2 · analyzed May 10, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-50318
https://www.exploit-db.com/exploits/50318
Product product
Product Reference
https://sentry.io/welcome/
Third Party Advisory third-party-advisory
VulnCheck Advisory: Sentry 8.2.0 Remote Code Execution via Pickle Deserialization
https://www.vulncheck.com/advisories/sentry-remote-code-execution-via-pickle-deserialization

Scores

CVSS v3 8.8
EPSS 0.0048
EPSS Percentile 65.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (4)
pypi/sentry 0 - 8.1.4PyPI
pypi/sentry 8.2.0 - 8.2.2PyPI
sentry/sentry 8.2.0
Sentry/Sentry 8.2.0
Published May 10, 2026
Tracked Since May 10, 2026