CVE-2026-53575CWE-79cross-site-scripting

CVE-2026-53575

Low · published October 15, 2026

CVSS v3.1
2.7
EPSS
0%
Percentile
12.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.7 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00225 · 12.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-15T19:17Z
References (3)
https://github.com/espocrm/espocrm/commit/ce73338ea7b463914e1271f16f8f73131ace886f · [email protected]https://github.com/espocrm/espocrm/releases/tag/9.3.9 · [email protected]https://github.com/espocrm/espocrm/security/advisories/GHSA-f34h-xxmv-j9xp · [email protected]
EPSS history
Timeline
  • 17 OCT 03:31Z
    EPSS moved — → 0%
    epss
  • 15 OCT 14:47Z
    EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user
    cvelistv5
  • 15 OCT 14:47Z
    EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user
    cvelistv5