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: 3.3%CVSS: 10.0Exploit: None knownExposed services: Not assessed

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
10.0CRITICALmedium confidence
EG Risk
51
EG Risk 51/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
3.3%
EPSS %ILE
87th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 14, 2020

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Oct 3, 2026
Patch available.
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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
wpewebkit—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
wpewebkit—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
wpewebkit—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
wpewebkit—
  • every version up to 2.28.3-1: fixed in 2.28.3-1
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.24.2-1 ... 2.28.3-1 (53 versions)
  • every version up to 2.28.3-2~deb10u1: fixed in 2.28.3-2~deb10u1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× 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 159 total refreshes for this CVE.

  1. 2026-10-05 17:39 UTCEPSS rescore
  2. 2026-10-04 23:18 UTCEPSS rescore
  3. 2026-10-03 14:22 UTCEPSS rescore
  4. 2026-09-30 15:11 UTCEG score recompute
  5. 2026-09-30 14:59 UTCEPSS rescore
  6. 2026-09-27 13:40 UTCEPSS rescore
  7. 2026-09-26 21:12 UTCOSV refresh
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  24. 2026-09-07 07:18 UTCOSV refresh
  25. 2026-09-06 13:44 UTCEPSS rescore
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  13. 2026-08-20 16:31 UTCOSV refresh
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  26. 2026-08-05 10:40 UTCOSV refresh
  27. 2026-08-04 15:06 UTCEPSS rescore
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  40. 2026-07-23 01:49 UTCEG score recompute
  41. 2026-07-22 22:34 UTCEG score recompute
  42. 2026-07-22 14:05 UTCEPSS rescore
  43. 2026-07-21 15:22 UTCEPSS rescore
  44. 2026-07-21 15:22 UTCEPSS rescore
  45. 2026-07-20 17:04 UTCEPSS rescore
  46. 2026-07-19 14:28 UTCEPSS rescore
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  48. 2026-07-19 09:22 UTCOSV refresh
  49. 2026-07-19 02:26 UTCEPSS rescore
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  68. 2026-07-01 15:03 UTCOSV refresh
  69. 2026-07-01 15:03 UTCEPSS rescore
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  73. 2026-06-28 14:05 UTCEPSS rescore
  74. 2026-06-28 04:54 UTCEPSS rescore
  75. 2026-06-28 04:54 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

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 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 3.3% probability of exploitation in the next 30 days (87th percentile of EPSS-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?
A fix for CVE-2020-13753 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2020-13753 are linked in the Vendor Advisories panel on this page.

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