CVE-2023-30962Network attack vector

Cross-user browser script execution via stored attachments

Published Sep 12, 2023 · Updated Sep 25, 2024

Stored XSS in Cerberus before 100.230704.0-27-g031dd58 allows remote authenticated users to run scripts in other users' browsers. Cerberus stores a dangerous attachment type that a browser processes as active content, but the public record does not name the handler or exact validation failure. Access to Gotham and interaction by another Gotham user are required; the published vendor impact is browser-side disclosure without integrity or availability effects.

CVSS severity6.8
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Cerberus before 100.230704.0-27-g031dd58 allows remote authenticated users to run scripts in other users' browsers. Cerberus stores a dangerous attachment type that a browser processes as active content, but the public record does not name the handler or exact validation failure. Access to Gotham and interaction by another Gotham user are required; the published vendor impact is browser-side disclosure without integrity or availability effects.

The record

CVE
CVE-2023-30962
Published
Sep 12, 2023
Updated
Sep 25, 2024
Vendor
Palantir Technologies
Product
Cerberus
Classifications
CWE-434, CWE-79, CAPEC-592, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2024Record 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=* <100.230704.0-27-g031dd58

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Palantir Technologies · Cerberusversion=* <100.230704.0-27-g031dd58

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.8Palantir TechnologiesCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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