What is CVE-2018-19335?

CVE-2018-19335 is a medium-severity vulnerability in Google Monorail, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.3/10. Published 2018-11-20.

How severe is CVE-2018-19335?

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

CSRF in Google Monorail

CVE-2018-19335

Google Monorail before 2018-06-07 has a Cross-Site Search (XS-Search) vulnerability because CSV downloads are affected by CSRF, and calculations of download times (for requests with a crafted groupby value) can be used to obtain sensitive information about the content of bug reports.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2018-11-20 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.004 (26.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Google Monorail

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

www.reddit.com/r/netsec/comments/9yiidf/xssearching_googles_bug_tracker_to_find… (Exploit, Third Party Advisory)
medium.com/@luanherrera/xs-searching-googles-bug-tracker-to-find-out-vulnerable…
chromium.googlesource.com/infra/infra/+/e27936ef82d33a5f286e1f2f22817aa682f79e90 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-19335?: CVE-2018-19335 is a medium-severity vulnerability in Google Monorail, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.3/10. Published 2018-11-20.
How severe is CVE-2018-19335?: Medium severity. CVSS v3 base score is 5.3 out of 10.