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CVE-2026-3693

25
FAUCET Score

CVE-2026-3693 is a high-severity vulnerability affecting Shy2593666979 AgentChat up to version 2.3.0, specifically within the user endpoint functions get_user_info and update_user_info. This flaw, categorized as improper control of resource identifiers (CWE-99), allows remote attackers to manipulate the user_id argument. The CVSS score of 7.3 (HIGH) indicates a low attack complexity and no user interaction required, with potential for low impact on confidentiality, integrity, and availability. While an exploit has been published, there is no evidence of active exploitation, and it lacks presence in common exploit frameworks or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
Shy2593666979AgentChat
2.0, 2.1, 2.2, 2.3.0CNA affected

CVSS Data

CVSS version used by this source: 4.0

5.5MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 12th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

github.com / CC-T-454455/Vulnerabilities/tree/master/agent-chat/vulnerability-1
github.com / CC-T-454455/Vulnerabilities/tree/master/agent-chat/vulnerability-2
vuldb.com
vuldb.com
vuldb.com
vuldb.com