CVE-2026-1337CWE-117

CVE-2026-1337

Medium · published February 6, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
15.3
In the wild
Unconfirmed
What it is

Insufficient escaping of unicode characters in query log in Neo4j Enterprise and Community editions prior to 2026.01 can lead to XSS if the user opens the logs in a tool that treats them as HTML. There is no security impact on Neo4j products, but this advisory is released as a precaution to treat the logs as plain text if using versions prior to 2026.01.

Proof of concept exploit:  https://github.com/JoakimBulow/CVE-2026-1337

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00249 · 15.3th percentile
Weakness
CWE-117 · Improper Output Neutralization for Logs
Published
2026-02-06T19:16Z
Affected products (2)
ProductVersionsFixed in
neo4j/neo4j< 2026.01.02026.01.0
neo4j/neo4j< 2026.01.02026.01.0
References (1)
https://github.com/JoakimBulow/CVE-2026-1337 · 3b236295-4ccd-4a1f-a1c1-a72eecc8d7b6
EPSS history
Timeline
  • 06 FEB 13:13Z
    Insufficient escaping of unicode characters in query log
    cvelistv5