CVE-2026-1520Public exploitNetwork attack vectorHinoki check available

Stored script execution via unencoded index names

Published Jan 28, 2026 · Updated Jan 28, 2026

Stored cross-site scripting in RethinkDB 2.4.0 through 2.4.3 allows remote authenticated users to execute script in an administrator's browser. The web administration UI inserts an attacker-controlled secondary-index name into the deletion interface without HTML encoding, so repeated delete actions interpret the name as markup. Exploitation requires administrative access to create the crafted index and user interaction in the web UI; successful exploitation alters browser-rendered content without affecting server confidentiality or availability.

CVSS severity2.4
Low
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in RethinkDB 2.4.0 through 2.4.3 allows remote authenticated users to execute script in an administrator's browser. The web administration UI inserts an attacker-controlled secondary-index name into the deletion interface without HTML encoding, so repeated delete actions interpret the name as markup. Exploitation requires administrative access to create the crafted index and user interaction in the web UI; successful exploitation alters browser-rendered content without affecting server confidentiality or availability.

The record

CVE
CVE-2026-1520
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
RethinkDB
Product
RethinkDB
Classifications
CWE-94, CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.4.0
  2. Affected versionversion=2.4.1
  3. Affected versionversion=2.4.2
  4. Affected versionversion=2.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

RethinkDB · RethinkDBversion=2.4.0; version=2.4.1; version=2.4.2; version=2.4.3

Published CVSS scores

3.3NVDAV:N/AC:L/Au:M/C:N/I:P/A:N
1.9NVDCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
2.4NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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