CVE-2026-35534Public exploitNetwork attack vector

Administrator session hijacking via Facebook attribute breakout

Published Apr 7, 2026 · Updated Apr 7, 2026

Stored XSS in PersonView.php in ChurchCRM before 7.1.0 allows remote authenticated users to hijack sessions via a saved Facebook value. PersonEditor.php passes the Facebook field through sanitizeText(), which strips tags but preserves quotes, and PersonView.php inserts it into an href attribute without attribute escaping. EditRecords access is required to save the payload, and a profile viewer must trigger the injected handler; administrator viewing exposes the administrator session and accessible data.

CVSS severity7.6
High
EPSS probability0.17%
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 PersonView.php in ChurchCRM before 7.1.0 allows remote authenticated users to hijack sessions via a saved Facebook value. PersonEditor.php passes the Facebook field through sanitizeText(), which strips tags but preserves quotes, and PersonView.php inserts it into an href attribute without attribute escaping. EditRecords access is required to save the payload, and a profile viewer must trigger the injected handler; administrator viewing exposes the administrator session and accessible data.

The record

CVE
CVE-2026-35534
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
ChurchCRM
Product
ChurchCRM
Classifications
CWE-87, CWE-79, CWE-116, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=< 7.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ChurchCRM · ChurchCRMversion=< 7.1.0

Published CVSS scores

7.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-87Improper Neutralization of Alternate XSS Syntax
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-116Improper Encoding or Escaping of Output
T1539Steal Web Session Cookie

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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