Cross-site Scripting (XSS) - Stored in chocobozzz/peertube

published 2021-09-15 5 y ago modified 2026-06-17 4 mo ago also GHSA-f2c5-997w-7f5c , EUVD-2021-2045

cvss: 7.6; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits: 0; none known

peertube is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Patch / fix

fixed in 2 links 1

npm peertube 3.4.0
chocobozzz chocobozzz/peertube 3.4.0

github.com/chocobozzz/peertube@0ea2f79 commit

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.dev https://huntr.dev/bounties/282807a8-4bf5-4fe2-af62-e05f945b3d65 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.6	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	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
npm	peertube	<3.4.0	3.4.0

Affected products

chocobozzz chocobozzz/peertube

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /chocobozzz/peertube/commit/0ea2f79d45b301fcd660efc894469a99b2239bf6
web, patch, third-party-advisory
huntr.dev /bounties/282807a8-4bf5-4fe2-af62-e05f945b3d65
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-3780
advisory
github.com /chocobozzz/peertube
package

Sources

CVE List CVE-2021-3780
GitHub Advisory GHSA-f2c5-997w-7f5c
NVD CVE-2021-3780

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