NASA Fprime v3.4.3 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities.

published 2025-03-25 19 mo ago modified 2026-06-17 4 mo ago also PYSEC-2025-115 , EUVD-2025-8099

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-27)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

visionspace.com https://visionspace.com/remote-code-execution-and-critical-vulnerabilities-in-nasa-fprime-v3-4-3/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
OSV	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	fprime	<=3.4.3	no fix listed

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

visionspace.com /remote-code-execution-and-critical-vulnerabilities-in-nasa-fprime-v3-4-3/
exploit, third-party-advisory, evidence

Sources

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