CVE-2026-8901Network attack vector

Unauthenticated stored XSS via error-log rendering

Published Jun 6, 2026 · Updated Jun 6, 2026

Stored XSS in Plugcrux Integration for Freshsales 1.0.15 and earlier allows remote attackers to inject scripts through form data. The plugin stores insufficiently sanitized failed CRM submission data and inserts it into the administrator error-log details modal without output escaping. No authentication is needed to submit the payload, but it executes only after a CRM API failure and an administrator opens the affected modal.

CVSS severity7.2
High
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 XSS in Plugcrux Integration for Freshsales 1.0.15 and earlier allows remote attackers to inject scripts through form data. The plugin stores insufficiently sanitized failed CRM submission data and inserts it into the administrator error-log details modal without output escaping. No authentication is needed to submit the payload, but it executes only after a CRM API failure and an administrator opens the affected modal.

The record

CVE
CVE-2026-8901
Published
Jun 6, 2026
Updated
Jun 6, 2026
Vendor
Plugcrux
Product
Integration for Freshsales
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 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=0 <=1.0.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Plugcrux · Integration for Freshsalesversion=0 <=1.0.15

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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