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CVE-2021-31216

26
FAUCET Score

CVE-2021-31216 is a Server-Side Request Forgery (SSRF) vulnerability affecting Siren Investigate versions prior to 11.1.1. An authenticated attacker can exploit a flaw in the default image proxy route to force the Investigate process to fetch arbitrary external URLs. This vulnerability carries a high CVSS score of 8.1, indicating a network-based attack with low complexity and high impact on confidentiality and integrity. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.1.1CPE matchmatch criteria
cpe:2.3:a:siren:investigate:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.72%
Probability of exploitation in next 30 days
EPSS Percentile
50.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0072 is in the 43rd percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

community.siren.io / c/announcements
Release NotesVendor Advisory
docs.siren.io / siren-platform-user-guide/11.1/release-notes.html
PatchRelease NotesVendor Advisory