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Fencer Intel
high 7.5

CVE-2020-21365 json

Directory traversal vulnerability in wkhtmltopdf through 0.12.5 allows remote attackers to read local files and disclose sensitive informat…

published 4y ago modified 4mo ago also EUVD-2020-14137

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

Directory traversal vulnerability in wkhtmltopdf through 0.12.5 allows remote attackers to read local files and disclose sensitive information via a crafted html file running with the default configurations.

Patch / fix

  • wkhtmltopdf Debian 12 0.12.6-1

debian advisories DEBIAN-CVE-2020-21365

  • wkhtmltopdf Ubuntu 20.04 LTS 0.12.5-1ubuntu0.1
  • wkhtmltopdf Ubuntu Pro 14.04 LTS 0.9.9-4ubuntu0.1~esm1
  • wkhtmltopdf Ubuntu Pro 16.04 LTS 0.12.2.4-1ubuntu0.1~esm1
  • wkhtmltopdf Ubuntu Pro 18.04 LTS 0.12.4-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-21365

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-21365 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2020-21365 updated cvss 7.5

wkhtmltopdf: same origin policy allows local files to be read by default

  • 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

2.32% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/wkhtmltopdf/wkhtmltopdf/issues/4536 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

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.