Stored XSS in EspoCRM before 5.6.4 allows remote attackers to execute malicious JavaScript and inject arbitrary source code into the target pages
Published Jul 18, 2019
6.1
MEDIUMCVSS 3.0
EPSS 1.14%
Description
Stored XSS in EspoCRM before 5.6.4 allows remote attackers to execute malicious JavaScript and inject arbitrary source code into the target pages. The attack begins by storing a new stream message containing an XSS payload. The stored payload can then be triggered by clicking a malicious link on the Notifications page.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.14% (0.01140) | 65.43th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.14% (0.01140) | 65.20th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00107) | 44.02th | v3 (v2023.03.01) |
| Jun 28, 2024 | 0.11% (0.00107) | 43.90th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00107) | 41.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Mar 31, 2022 | 2.56% (0.02561) | 62.63th | v2 (v2022.01.01) |
| Jan 6, 2022 | 3.43% (0.03427) | 68.01th | v1 |
| Jan 5, 2022 | 0.78% (0.00785) | 53.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.78% (0.00785) | 0.00th | v1 |
References (2)
- https://github.com/espocrm/espocrm/issues/1349 x_refsource_MISCExploitThird Party Advisory
- https://github.com/espocrm/espocrm/milestone/64?closed=1 x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/espocrm/espocrm/issues/1349 | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/espocrm/espocrm/milestone/64?closed=1 | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.