rendertron XSS vulnerability

published 2018-12-17 7 y ago modified 2026-06-17 4 mo ago also GHSA-j88m-953w-8r2c , EUVD-2019-0188

cvss: 6.1; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

Error reporting within Rendertron 1.0.0 allows reflected Cross Site Scripting (XSS) from invalid URLs.

Patch / fix

fixed in 1 links 2

npm rendertron 1.1.0

github.com/GoogleChrome/rendertron@8d70628 commit
github.com/GoogleChrome/rendertron#88 pull request

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

bugs.chromium.org https://bugs.chromium.org/p/chromium/issues/detail?id=759111 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.1	CVSS:3.0/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	3.0	6.1	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	rendertron	<1.1.0	1.1.0

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /GoogleChrome/rendertron/commit/8d70628c96ae72eff6eebb451d26fc9ed6b58b0e
web, patch
github.com /GoogleChrome/rendertron/pull/88
web, patch, third-party-advisory
bugs.chromium.org /p/chromium/issues/detail?id=759111
web, exploit, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2017-18352
advisory
github.com /GoogleChrome/rendertron
package
github.com /advisories/GHSA-j88m-953w-8r2c
advisory

Sources

Fencer Intel 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