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Vulnerability record · CVE-2026-1337 · published 6 February 2026

CVE-2026-1337: Neo4j vulnerability

Neo4j · Neo4j

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

1.1 CVSS 4.0 Low EPSS 0.23% · top 87.9% CWE-117 · CWE-117
1.1CVSS 4.0 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
28 Aug 2026Last modified by NVD

Description

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

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/JoakimBulow/CVE-2026-1337 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-1337), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.