CVE-2021-25990Public exploitNetwork attack vector

Authenticated stored XSS via unsanitized contact rendering

Published Dec 29, 2021 · Updated Apr 30, 2025

Stored XSS in the contacts field of ifme 7.22.0 through 7.31.4 allows remote authenticated users to execute script in another browser. The renderContent utility passes stored contact strings directly to react-render-html without sanitization, so iframe-delivered markup is interpreted as active content. Exploitation requires low-privileged access to save the payload and interaction that loads the crafted contact, placing browser-accessible data and actions at risk.

CVSS severity5.4
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in the contacts field of ifme 7.22.0 through 7.31.4 allows remote authenticated users to execute script in another browser. The renderContent utility passes stored contact strings directly to react-render-html without sanitization, so iframe-delivered markup is interpreted as active content. Exploitation requires low-privileged access to save the payload and interaction that loads the crafted contact, placing browser-accessible data and actions at risk.

The record

CVE
CVE-2021-25990
Published
Dec 29, 2021
Updated
Apr 30, 2025
Vendor
if-me
Product
ifme
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2025Record 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=unspecified <=v7.31.4
  2. Affected versionversion=v7.22.0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

if-me · ifmeversion=unspecified <=v7.31.4; version=v7.22.0 <unspecified

Published CVSS scores

5.4MendCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo