CVE-2022-50937Public exploitNetwork attack vector

Low-privilege session hijacking via unencoded link fields

Published Jan 13, 2026 · Updated Jan 13, 2026

Stored cross-site scripting in Ametys CMS 4.4.1 allows remote authenticated users to hijack sessions through crafted external links. The add external link function stores Link Text, Small description, and Description values without encoding, then renders them as markup in link listings. A low-privileged account that can create links is required, and execution occurs when a user views an affected frontend or backend listing.

CVSS severity5.1
Medium
EPSS probability0.31%
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 Ametys CMS 4.4.1 allows remote authenticated users to hijack sessions through crafted external links. The add external link function stores Link Text, Small description, and Description values without encoding, then renders them as markup in link listings. A low-privileged account that can create links is required, and execution occurs when a user views an affected frontend or backend listing.

The record

CVE
CVE-2022-50937
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Ametys
Product
Ametys CMS
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=4.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ametys · Ametys CMSversion=4.4.1

Published CVSS scores

6.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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')
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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