CVE-2020-11026

Specially crafted filenames in WordPress leading to XSS

MEDIUM

5.4

CVSS Score

Published: April 30, 2020 at 10:15 PM UTC

Updated: June 17, 2026 at 02:48 AM UTC

2 products affected across 2 vendorsDebian LinuxWordPress

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Severity

MEDIUM5.4

Exploit prediction

EPSS 2%

Description

In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

10.0 8.0 9.0

WordPress · WordPressdrupal

95%

v < 3.7.33v < 3.8.33v < 3.9.31v < 4.0.30v < 4.1.30v < 4.2.27v < 4.3.23v < 4.4.22v < 4.5.21v < 4.6.18v < 4.7.17v < 4.8.13v < 4.9.14v < 5.0.9v < 5.1.5v < 5.2.6v < 5.3.3v < 5.4.13.7 ≤ v < 3.7.333.8 ≤ v < 3.8.333.9 ≤ v < 3.9.314.0 ≤ v < 4.0.304.1 ≤ v < 4.1.304.2 ≤ v < 4.2.274.3 ≤ v < 4.3.234.4 ≤ v < 4.4.224.5 ≤ v < 4.5.214.6 ≤ v < 4.6.184.7 ≤ v < 4.7.174.8 ≤ v < 4.8.134.9 ≤ v < 4.9.145.0 ≤ v < 5.0.95.1 ≤ v < 5.1.55.2 ≤ v < 5.2.65.3 ≤ v < 5.3.35.4

Affected range stops below 3.7.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.8.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.9.31, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.0.30, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.1.30, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.2.27, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.3.23, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.4.22, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.5.21, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.6.18, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.7.17, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.8.13, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.9.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.1.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-3gw2-4656-pfr2

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2020/05/msg00011.html

x_refsource_MISCRelease NotesVendor Advisory

Source: [email protected]

https://wordpress.org/support/wordpress-version/version-5-4-1/#security-updates

Vendor Advisoryx_refsource_DEBIANThird Party Advisory

Source: [email protected]

https://www.debian.org/security/2020/dsa-4677

CVSS

5.4MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-707CWE-79

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