CVE-2023-30963Network attack vector

Stored XSS via unneutralized image attributes

Published Jul 10, 2023 · Updated Oct 21, 2024

Stored XSS in Palantir Technologies Foundry Frontend before 6.229.0 allows remote authenticated users to execute script in Slate. The Slate Query Dropdown menu stores input containing scripting elements in HTML IMG-tag attributes without correctly neutralizing them, so later rendering executes the payload. Exploitation requires a Foundry account, a viewer who opens the affected Slate content, and a bypass of Foundry's CSP; the published impact is limited to low confidentiality and integrity loss.

CVSS severity5.4
Medium
EPSS probability0.38%
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 Palantir Technologies Foundry Frontend before 6.229.0 allows remote authenticated users to execute script in Slate. The Slate Query Dropdown menu stores input containing scripting elements in HTML IMG-tag attributes without correctly neutralizing them, so later rendering executes the payload. Exploitation requires a Foundry account, a viewer who opens the affected Slate content, and a bypass of Foundry's CSP; the published impact is limited to low confidentiality and integrity loss.

The record

CVE
CVE-2023-30963
Published
Jul 10, 2023
Updated
Oct 21, 2024
Vendor
Palantir Technologies
Product
Foundry Frontend
Classifications
CWE-82, CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 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=* <6.229.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Palantir Technologies · Foundry Frontendversion=* <6.229.0

Published CVSS scores

5.4Palantir TechnologiesCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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 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-82Improper Neutralization of Script in Attributes of IMG Tags in a Web Page
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

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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