CVE-2026-9577Public exploitNetwork attack vector

Administrator-session script execution via unescaped error output

Published Jul 23, 2026 · Updated Jul 23, 2026

Reflected XSS in ifeelweb Post Status Notifier Lite before 1.13.0 allows remote attackers to execute script in an administrator's session. An invalid mod query parameter makes Zend ViewRenderer place its raw value in an exception message that the admin error template renders without escaping. Exploitation requires an authenticated administrator to open a crafted admin-page URL, enabling script execution with that session's web privileges.

CVSS severity4.8
Medium
EPSS probability0.24%
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

Reflected XSS in ifeelweb Post Status Notifier Lite before 1.13.0 allows remote attackers to execute script in an administrator's session. An invalid mod query parameter makes Zend ViewRenderer place its raw value in an exception message that the admin error template renders without escaping. Exploitation requires an authenticated administrator to open a crafted admin-page URL, enabling script execution with that session's web privileges.

The record

CVE
CVE-2026-9577
Published
Jul 23, 2026
Updated
Jul 23, 2026
Vendor
worschtebrot
Product
Post Status Notifier Lite
Classifications
CWE-79, T1203
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 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 <1.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

worschtebrot · Post Status Notifier Liteversion=0 <1.13.0

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/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
PrivilegesUnavailable
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