What is CVE-2026-1520?

CVE-2026-1520 is a low-severity vulnerability in Rethinkdb, classified under Cross-site Scripting. CVSS score: 2.4/10. Published 2026-01-28.

How severe is CVE-2026-1520?

Low severity. CVSS v3 base score is 2.4 out of 10.

RCE in Rethinkdb

CVE-2026-1520

A vulnerability was identified in rethinkdb up to 2.4.3. Affected by this issue is some unknown functionality of the component Secondary Index Handler. Such manipulation leads to cross site scripting. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N.

Affected products

N/a Rethinkdb — versions 2.4.0, 2.4.1, 2.4.2

Weakness classification (CWE)

References

cna@vuldb.com (vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (related)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-1520?: CVE-2026-1520 is a low-severity vulnerability in Rethinkdb, classified under Cross-site Scripting. CVSS score: 2.4/10. Published 2026-01-28.
How severe is CVE-2026-1520?: Low severity. CVSS v3 base score is 2.4 out of 10.