CVE-2026-9570Public exploitNetwork attack vector

Reflected XSS via unsanitized project-id parameter

Published Jun 17, 2026 · Updated Jun 17, 2026

Reflected XSS in Taskbuilder before 5.0.8 allows remote attackers to execute script in a logged-in user's browser through a crafted URL. A shortcode-rendered frontend page inserts the unsanitized project-id URL parameter into an inline wppm_open_project JavaScript call. Exploitation requires the target to be authenticated and to visit the crafted URL on a page containing the wppm_projects shortcode, allowing script execution in that user's WordPress context.

CVSS severity7.1
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Taskbuilder before 5.0.8 allows remote attackers to execute script in a logged-in user's browser through a crafted URL. A shortcode-rendered frontend page inserts the unsanitized project-id URL parameter into an inline wppm_open_project JavaScript call. Exploitation requires the target to be authenticated and to visit the crafted URL on a page containing the wppm_projects shortcode, allowing script execution in that user's WordPress context.

The record

CVE
CVE-2026-9570
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
Taskbuilder
Product
Taskbuilder
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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 <5.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Taskbuilder · Taskbuilderversion=0 <5.0.8

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

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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