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01 Record

CVE-2026-33741

EspoCRM: Stored XSS via SVG attachment loading same-origin JavaScript

MediumPUBLISHEDCNA: GitHub_M
CNA base score6.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L

02 Description

EspoCRM: Stored XSS via SVG attachment loading same-origin JavaScript

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.21% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 11.2% of scored records. A rank, not a probability.
NVD base score
6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
NVD analysis status
Deferred. NVD last modified this record on 2026-07-24.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-05-19 18:14Z5 MO AGO
Last updated
2026-05-20 14:02Z5 MO AGO
Reserved
2026-03-23
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 6.8)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
Weaknesses
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.2
Document digest
f3c10f2416d846821cba1c3cc450175378be7e28e764619464a23de69a3506cc

05 Affected products

VendorProductVersionsPlatforms
espocrmespocrm< 9.3.4—

06 References