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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (15.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Rethinkdb — versions 2.4.0, 2.4.1, 2.4.2
Weakness classification (CWE)
References
- vuldb.com/ (vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/59lab/dbdb/blob/main/There is a cross-site scripting(XSS) vulnerabil… (related)
- github.com/59lab/dbdb/blob/main/There is a cross-site scripting(XSS) vulnerabil… (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.