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TI-2026-74789 Aliases CVE-2026-53575

EspoCRM applicationName setting allows persistent XSS via CSP nonce injection

Priority LOW 13CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

EspoCRM, an open source customer relationship management application, is vulnerable to persistent cross-site scripting (CWE-79) in versions before 9.3.9. An authenticated administrator can place crafted content in the applicationName setting through CSP nonce injection. The injected content is inserted into the main application page without escaping, so attacker-controlled JavaScript runs in users' sessions and can leak page data, including unsaved user input. CVSS 3.1 base score 2.7 (LOW).

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an authenticated administrator can place crafted content in the applicationName setting through CSP nonce injection. The persistent injection is inserted into the main application page without escaping, allowing attacker-controlled JavaScript to run in users' sessions and leak page data, including unsaved user input. This issue is fixed in version 9.3.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00225 13th percentileScored 2026-11-07
Fix Fixed espocrm (espocrm): 9.3.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
espocrmespocrmbefore 9.3.99.3.9Patch availableCNA
  • espocrm Vendorespocrm Affected before 9.3.9 Fixed in 9.3.9 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*——espocrm
  • cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:* Versions — — ·espocrm

Remediation

Upgrade EspoCRM to version 9.3.9, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA espocrm (espocrm) Fixed in 9.3.9

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-53575

References

Other 3

  • TI-2020-19229 EspoCRM 5.7.0 < 5.9.0 - Two-Factor Authentication Bypass via Auth Token Reuse Between Accounts with Identical Passwords CVSS 4.0HIGH 8.6
  • TI-2026-26036 Path traversal in espocrm CVSS 3.1CRITICAL 9.1
  • TI-2025-32670 EspoCRM vulnerable to LDAP Injection through Improper Neutralization of Special Elements CVSS 3.1MEDIUM 6.5
  • TI-2026-26112 EspoCRM has Admin TemplateManager path traversal that allows arbitrary file read write and delete CVSS 3.1HIGH 7.2
  • TI-2025-23468 EspoCRM vulnerable to HTML Injection into phishing, which may lead to account takeover CVSS 4.0HIGH 7.0
  • TI-2026-26120 EspoCRM: Stored XSS via SVG attachment loading same-origin JavaScript CVSS 3.1MEDIUM 6.8
See all 64 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences