CVE-2020-13753

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 10.0Exploit: None knownExposed: 0

A fix is available — apply it.

The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONE_NEWUSER and the TIOCSTI ioctl. CLONE_NEWUSER could potentially be used to confuse xdg-desktop-portal, which allows access outside the sandbox. TIOCSTI can be used to directly execute commands outside the sandbox by writing to the controlling terminal's input buffer, similar to CVE-2017-5226.

CVSS v3
10.0
EG Score
10.0(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

July 14, 2020

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Sep 12, 2026
No patch confirmed yet.
generic

WebKitGTK+: Multiple vulnerabilities (GLSA 202007-11) — Gentoo security

https://security.gentoo.org/glsa/202007-11
generic

[SECURITY] Fedora 31 Update: webkit2gtk3-2.28.3-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GER2ATKZXDHM7FFYJH67ZPNZZX5VOUVM/
generic

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2020-0006

https://www.openwall.com/lists/oss-security/2020/07/10/1
generic

[SECURITY] [DSA 4724-1] webkit2gtk security update

https://www.debian.org/security/2020/dsa-4724
generic

Changeset 262368 – WebKit

https://trac.webkit.org/changeset/262368/webkit

Vendor Advisories for CVE-2020-13753(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatwebkitgtk4-0:2.48.3-2.el7_92025-07-07redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(9 across 5 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.28.3-1—
wpewebkit—2.28.3-1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.28.3-1—
wpewebkit—2.28.3-1—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.28.3-1—
wpewebkit—2.28.3-1—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.28.3-1—
wpewebkit—2.28.3-1—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.24.2-1 ... 2.28.3-1 (53 versions)2.28.3-2~deb10u1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-09-18 19:23 UTCEPSS rescore
  2. 2026-09-17 19:22 UTCEPSS rescore
  3. 2026-09-16 14:04 UTCEPSS rescore
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  11. 2026-09-07 07:18 UTCOSV refresh
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  25. 2026-08-20 16:31 UTCOSV refresh
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  1. 2026-08-19 17:00 UTCEPSS rescore
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  22. 2026-07-26 14:51 UTCEPSS rescore
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  27. 2026-07-23 01:49 UTCEG score recompute
  28. 2026-07-22 22:34 UTCEG score recompute
  29. 2026-07-22 14:05 UTCEPSS rescore
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  55. 2026-07-01 15:03 UTCOSV refresh
  56. 2026-07-01 15:03 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2020-13753?
CVE-2020-13753 is a critical vulnerability published on July 14, 2020. The bubblewrap sandbox of WebKitGTK and WPE WebKit, prior to 2.28.3, failed to properly block access to CLONENEWUSER and the TIOCSTI ioctl. CLONENEWUSER could potentially be used to confuse xdg-desktop-portal, which allows access outside the sandbox. TIOCSTI can be used to directly execute commands…
When was CVE-2020-13753 disclosed?
CVE-2020-13753 was first published in the National Vulnerability Database on July 14, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-13753 actively exploited?
CVE-2020-13753 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 12.2% of all scored CVEs.
What is the CVSS score of CVE-2020-13753?
CVE-2020-13753 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2020-13753?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-13753, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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