Reddit Terminal Viewer (RTV) vulnerable to argument injection attacks

published 2017-12-14 8y ago modified 2026-07-07 4mo ago also GHSA-336h-q7mh-8vf8 , PYSEC-2026-914 , EUVD-2022-2091

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits: 0; none known

scripts/inspect_webbrowser.py in Reddit Terminal Viewer (RTV) 1.19.0 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-17516 updated 2025-11-21 cvss 5.3

rtv: Command injection in scripts/inspect_webbrowser.py

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P
OSV	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitHub	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
pypi	rtv	<=1.19.0	no fix listed

Classification

Weakness

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

security-tracker.debian.org /tracker/CVE-2017-17516
web, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2017-17516
advisory
github.com /michael-lazar/rtv/issues/531
web
github.com /michael-lazar/rtv
package
pypi.org /project/rtv
package
github.com /advisories/GHSA-336h-q7mh-8vf8
advisory

Sources

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