CVE-2026-2947Public exploitNetwork attack vector

Browser script execution via unvalidated profile updates

Published Feb 22, 2026 · Updated Feb 22, 2026

Stored cross-site scripting in RYMCU Forest 0.0.1 through 0.0.5 allows remote authenticated users to inject script through profile updates. The /api/v1/user-info/update handler binds an untrusted UserInfoDTO and passes it to userService.updateUserInfo without validation or neutralization. A user permission and a victim who views the saved profile are required; the script then modifies content in that victim's browser context.

CVSS severity3.5
Low
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in RYMCU Forest 0.0.1 through 0.0.5 allows remote authenticated users to inject script through profile updates. The /api/v1/user-info/update handler binds an untrusted UserInfoDTO and passes it to userService.updateUserInfo without validation or neutralization. A user permission and a victim who views the saved profile are required; the script then modifies content in that victim's browser context.

The record

CVE
CVE-2026-2947
Published
Feb 22, 2026
Updated
Feb 22, 2026
Vendor
RYMCU
Product
Forest
Classifications
CWE-79, CWE-94, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.1
  2. Affected versionversion=0.0.2
  3. Affected versionversion=0.0.3
  4. Affected versionversion=0.0.4
  5. Affected versionversion=0.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RYMCU · Forestversion=0.0.1; version=0.0.2; version=0.0.3; version=0.0.4; version=0.0.5

Published CVSS scores

3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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