CVE-2021-31818

mediumpriority · track · 17EPSS 0.006 · 50 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.62% (50th) EPSS

CVSS 4 · medium

Is it mine?

8 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Affected versions of Octopus Server are prone to an authenticated SQL injection vulnerability in the Events REST API because user supplied data in the API request isn’t parameterised correctly. Exploiting this vulnerability could allow unauthorised access to database tables.

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-89USprimary

affected products (8)

Products and version ranges known to be affected.

Octopus Deploy Octopus Server2018.9.17 → unspecifiedenisa_euvdEU
Octopus Deploy Octopus Server2021.1.7149 → unspecifiedenisa_euvdEU
Octopus Deploy Octopus Serverunspecified → 2020.6.5146enisa_euvdEU
Octopus Deploy Octopus Serverunspecified → 2021.1.7316enisa_euvdEU
octopus server2018.9.17 → 2018.13.0nvdUScpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*
octopus server2020.0.0 → 2020.6.0nvdUScpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*
octopus server2020.6.0 → 2020.6.5146nvdUScpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*
octopus server2021.1.0 → 2021.1.7316nvdUScpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-06-17modified 2026-06-17

related (23,874)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-114625US	—OT critical	1.03% (63rd)	KEV	2026-10-22
VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successf…
CVE-2026-76461US	critical9.8OT critical	29.5% (98th)	KEV	2026-09-14
A vulnerability in the email parsing of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to execute arbitrary commands with roo…
CVE-2026-72898US	—OT critical	98.6% (100th)	KEV	2026-08-10
Metabase allows a remote, unauthenticated attacker to inject arbitrary SQL via the '/reset_password' database endpoint and gain administrator access to the connected Metabase insta…
CVE-2026-60137US	—OT critical	5.32% (93rd)	KEV	2026-07-17
WordPress 6.8.x before 6.8.6, 6.9.x before 6.9.5, and 7.0.x before 7.0.2 does not properly sanitise the author__not_in parameter of WP_Query, which could allow SQL Injection when a…
CVE-2026-9586US	critical9.8OT critical	19.0% (97th)	KEV	2026-07-17
An unauthenticated SQL injection vulnerability exists in Sangoma Switchvox SMB Edition 8.3 (104997). The /pa endpoint processes XML content beginning with <PolycomIPPhone> and dire…

+23869 more

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan