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CVE-2021-31818

17
FAUCET Score

CVE-2021-31818 is an authenticated SQL injection vulnerability affecting Octopus Server. It arises from improper parameterization of user-supplied data within the Events REST API, potentially allowing unauthorized access to database tables. This vulnerability has a CVSS score of 4.3 (Medium) and can be exploited remotely with low attack complexity, requiring prior authentication. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2020.6.5146CPE match
cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*
< 2021.1.7316CPE match
cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*
>= 2018.9.17, < 2018.13.0CPE matchmatch criteria
cpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*
>= 2020.0.0, < 2020.6.0CPE matchmatch criteria
cpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*
>= 2020.6.0, < 2020.6.5146CPE matchmatch criteria
cpe:2.3:a:octopus:server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
46.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 56th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

advisories.octopus.com / adv/2021-04---SQL-Injection-in-the-Events-REST-API-%28CVE-2021-31818%29.2013233248.html