🛡️ CVE-2026-1337 — neo4j

🟢 CVSS 2.0 — Low ⚠️ Exploit Public CWE-117 OSV
2.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Neo4j Enterprise and Community editions have insufficient escaping of unicode characters in query log

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

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Affected software

CVE-2026-1337 is recorded against 2 packages.

  • neo4j
  • org.neo4j:neo4j (fixed in 2026.01)

Timeline and source

Published on 26 February 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Web)

Details

Severity LOW
CVSS Score 2.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CWE CWE-117
Public Exploit ⚠️ Yes
Source OSV
Published 2026-02-26
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
neo4j — —
org.neo4j:neo4j — 2026.01

Similar Threats

Exploit Protection

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