Dashboard / CVE-2026-126306

CVE-2026-126306

HIGH
MEDIUM Priority: 0.04 BB Relevance: 57/100
Published: 2026-11-13 Modified: 2026-11-13 First seen: 2026-11-13 Status: active

Attack Surface

Network Low Complexity Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Passive
S: X
AT: None
VC: High
VI: High
VA: High

Description

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.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
espocrm espocrm 10.0.0 < 10.0.8
espocrm espocrm 0 < 9.3.11
espocrm espocrm 10.0.0 < 10.0.8
espocrm espocrm 0 < 9.3.11

References & Advisories (2)

Bug Bounty Relevance

57 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

8.6 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.43%
Raw Score 0.004280
Percentile 37.5%
Date 2026-11-13

Intelligence Sources

mitre ref →
nvd ref →

External Links