CVE-2026-126306
EspoCRM before 10.0.8 Stored XSS via Malicious SVG Attachment
EspoCRM before 9.3.11 and 10.x before 10.0.8 contains a stored cross-site scripting vulnerability that allows low-privileged users to upload crafted SVG images that submit authenticated POST requests to arbitrary backend endpoints. Attackers can trick an administrator into opening the SVG in a separate browser tab and clicking it, performing administrator actions such as elevating the attacker's account to administrator.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| espocrm espocrm |
≥ 10.0.0; < 10.0.8 (affected, semver) 10.0.8 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| espocrm espocrm |
≥ 0; < 9.3.11 (affected, semver) 9.3.11 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.6 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 8.0 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/espocrm/espocrm/security/advisories/GHSA-4qv5-q4g7-hp5rCNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/espocrm-before-10.0.8-stored-xss-via-malicious-svg-attachmentCNA: VulnCheck · third-party-advisory
For agents and automation
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