CVE-2022-2777Network attack vector

Session cookie theft via uncleaned PATCH input

Published Aug 11, 2022 · Updated Aug 3, 2024

Stored XSS in Microweber before 1.3.1 allows remote authenticated users to steal session cookies through a crafted category title. The XSS middleware cleans POST bodies but, before the fix, forwards PATCH request fields such as an edited category title without applying HTMLClean. A low-privileged account able to update a category can persist script that executes when another user views the category.

CVSS severity6.6
Medium
EPSS probability0.45%
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 Microweber before 1.3.1 allows remote authenticated users to steal session cookies through a crafted category title. The XSS middleware cleans POST bodies but, before the fix, forwards PATCH request fields such as an edited category title without applying HTMLClean. A low-privileged account able to update a category can persist script that executes when another user views the category.

The record

CVE
CVE-2022-2777
Published
Aug 11, 2022
Updated
Aug 3, 2024
Vendor
Microweber
Product
Microweber
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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 <1.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microweber · Microweberversion=unspecified <1.3.1

Published CVSS scores

6.6huntr.devCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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