CVE-2021-36711

Octobot mishandles Tentacles upload

9.8 CriticalPublic exploitFix available

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

16.6%Up 3.9 points since Jul 17, 2022

What each source reports

NVD Score used 9.8

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: CVE-2021-36711
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

CVE List No score

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: CVE-2021-36711
Updated: 2026-11-02

EUVDEUVD-2022-0171 No score

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: EUVD-2022-0171
Updated: 2026-11-03

GitHub AdvisoriesGHSA-fr75-x856-q6j8 9.3

Octobot mishandles Tentacles upload

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: GHSA-fr75-x856-q6j8
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

OSV 9.8

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: CVE-2021-36711
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-fr75-x856-q6j8 9.3

Octobot mishandles Tentacles upload

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: GHSA-fr75-x856-q6j8
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

OSVPYSEC-2022-235 No score

WebInterface in OctoBot before 0.4.4 allows remote code execution because Tentacles upload is mishandled.

Record: PYSEC-2022-235
Updated: 2026-11-02

Affected products

octobot

Affected packages

Affected packages
Package	Affected	Fixed
`octobot` PyPI	before 0.4.4	0.4.4
`octobot` PyPI	before 0.4.4, plus listed versions 0.2.4b10.2.4b20.3.10.3.2b00.3.3 Show 45 moreShow less 0.3.40.3.50.3.60.3.70.3.80.3.90.4.0a110.4.0a120.4.0a130.4.0a140.4.0a150.4.0a160.4.0a170.4.0a180.4.0a190.4.0a20.4.0a200.4.0a210.4.0a220.4.0a230.4.0a240.4.0a250.4.0a260.4.0a30.4.0a40.4.0a50.4.0a60.4.0a70.4.0a80.4.0a90.4.0b10.4.0b100.4.0b110.4.0b120.4.0b130.4.0b140.4.0b150.4.0b160.4.0b170.4.0b20.4.0b30.4.0b40.4.0b50.4.0b60.4.0b7	0.4.4

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	OctoBot WebInterface 0.4.3 - Remote Code Execution (RCE)	2022-07-21

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-36711 is a critical vulnerability (CVSS 9.8) in Octobot, published July 16, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 16.6%, the 97th percentile. Fixed in octobot 0.4.4.

References

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This page doesn't list everything

Left out here: 5 versions. The JSON record has them.