What is CVE-2019-13075?

CVE-2019-13075 is a medium-severity vulnerability in Torproject Tor Browser, classified under Information Disclosure. CVSS score: 5.3/10. Published 2019-06-30.

How severe is CVE-2019-13075?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Torproject Tor Browser

CVE-2019-13075

Tor Browser through 8.5.3 has an information exposure vulnerability. It allows remote attackers to detect the browser's language via vectors involving an IFRAME element, because text in that language is included in the title attribute of a LINK element for a non-HTML page. This is related to a behavior of Firefox before 68.

Vulnerability class: Information Disclosure

Published 2019-06-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.019 (78.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Torproject Tor Browser

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

trac.torproject.org/projects/tor/ticket/30657 (Vendor Advisory)
hackerone.com/reports/588239 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-13075?: CVE-2019-13075 is a medium-severity vulnerability in Torproject Tor Browser, classified under Information Disclosure. CVSS score: 5.3/10. Published 2019-06-30.
How severe is CVE-2019-13075?: Medium severity. CVSS v3 base score is 5.3 out of 10.