Stored XSS via javascript URI in Apollo Change Requests comment

published 2023-09-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-35297

cvss: 4.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

In Apollo change requests, comments added by users could contain a javascript URI link that when rendered will result in an XSS that require user interaction.

Patch / fix

fixed in 1

Palantir com.palantir.apollo:autopilot 3.308.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-24)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

Palantir com.palantir.apollo:autopilot

Classification

Weakness

CWE-84 Improper Neutralization of Encoded URI Schemes in a Web Page
CWE-79 Improper Neutralization of Input During Web Page Generation

References

palantir.safebase.us /?tcuUid=4c257f07-58af-4532-892a-bdbe8ab3ec63
third-party-advisory

Sources

CVE List CVE-2023-30959
NVD CVE-2023-30959

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary