CVE-2020-28034

WordPress before 5.5.2 allows XSS associated with global variables.

6.1 MediumFix available

WordPress before 5.5.2 allows XSS associated with global variables.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

1.72%Up 0.3 points since Apr 14, 2021

What each source reports

NVD Score used 6.1

WordPress before 5.5.2 allows XSS associated with global variables.

Record: CVE-2020-28034
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

WordPress before 5.5.2 allows XSS associated with global variables.

Record: CVE-2020-28034
Updated: 2026-11-02

EUVDEUVD-2020-20525 No score

WordPress before 5.5.2 allows XSS associated with global variables.

Record: EUVD-2020-20525
Updated: 2026-11-03

GitHub AdvisoriesGHSA-q684-cq3q-r3gp 6.1

WordPress before 5.5.2 allows XSS associated with global variables.

WordPress before 5.5.2 allows XSS associated with global variables.

Record: GHSA-q684-cq3q-r3gp
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 6.1

WordPress before 5.5.2 allows XSS associated with global variables.

Record: CVE-2020-28034
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-28034 6.1

WordPress before 5.5.2 allows XSS associated with global variables.

Record: DEBIAN-CVE-2020-28034
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-28034 6.1

WordPress before 5.5.2 allows XSS associated with global variables.

Record: UBUNTU-CVE-2020-28034
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVBIT-wordpress-2020-28034 No score

WordPress before 5.5.2 allows XSS associated with global variables.

Record: BIT-wordpress-2020-28034
Updated: 2026-11-02

OSVBIT-wordpress-multisite-2020-28034 No score

WordPress before 5.5.2 allows XSS associated with global variables.

Record: BIT-wordpress-multisite-2020-28034
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wordpress` Bitnami	before 5.5.2	5.5.2
`wordpress-multisite` Bitnami	before 5.5.2	5.5.2
`wordpress` Debian:12	before 5.5.3+dfsg1-1	5.5.3+dfsg1-1
`wordpress` Debian:13	before 5.5.3+dfsg1-1	5.5.3+dfsg1-1
`wordpress` Debian:14	before 5.5.3+dfsg1-1	5.5.3+dfsg1-1
`wordpress` Debian:9 From an advisory covering 9 CVEs	before 4.7.19+dfsg-1+deb9u1, plus listed versions 4.7.18+dfsg-1+deb9u14.7.5+dfsg-24.7.5+dfsg-2+deb9u14.7.5+dfsg-2+deb9u1~bpo8+14.7.5+dfsg-2+deb9u2 Show 5 moreShow less 4.7.5+dfsg-2+deb9u2~bpo8+14.7.5+dfsg-2+deb9u34.7.5+dfsg-2+deb9u44.7.5+dfsg-2+deb9u54.7.5+dfsg-2+deb9u6	4.7.19+dfsg-1+deb9u1
`wordpress` Debian:10 From an advisory covering 9 CVEs	before 5.0.11+dfsg1-0+deb10u1, plus listed versions 5.0.10+dfsg1-0+deb10u15.0.4+dfsg1-15.0.4+dfsg1-1+deb10u15.0.4+dfsg1-1+deb10u2	5.0.11+dfsg1-0+deb10u1
`wordpress` Ubuntu:16.04:LTS	All versions, plus listed versions 4.3+dfsg-14.3.1+dfsg-14.4+dfsg-14.4.1+dfsg-14.4.2+dfsg-14.4.2+dfsg-1ubuntu1	None known
`wordpress` Ubuntu:18.04:LTS	All versions, plus listed versions 4.8.2+dfsg-24.8.3+dfsg-14.9.1+dfsg-14.9.2+dfsg-14.9.4+dfsg-14.9.5+dfsg1-1	None known
`wordpress` Ubuntu:20.04:LTS	All versions, plus listed versions 5.2.2+dfsg1-15.2.4+dfsg1-15.3.2+dfsg1-15.3.2+dfsg1-1ubuntu1	None known

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Affected packages
Package	Affected	Fixed
`wordpress` Ubuntu:22.04:LTS	All versions, plus listed versions 5.7.1+dfsg1-2ubuntu15.8.1+dfsg1-2ubuntu15.8.2+dfsg1-1ubuntu15.8.3+dfsg1-1ubuntu15.8.3+dfsg1-1ubuntu1.1	None known
`wordpress` Ubuntu:24.04:LTS	All versions, plus listed versions 6.2+dfsg1-1ubuntu16.4.3+dfsg1-1ubuntu1	None known
`wordpress` Ubuntu:25.10	All versions, plus listed versions 6.7.2+dfsg1-1.1ubuntu1	None known
`wordpress` Ubuntu:26.10	All versions, plus listed versions 6.7.2+dfsg1-1.1ubuntu2	None known
`wordpress` Ubuntu:26.04:LTS	All versions, plus listed versions 6.7.2+dfsg1-1.1ubuntu16.7.2+dfsg1-1.1ubuntu2	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-28034 is a medium vulnerability (CVSS 6.1) in Wordpress, published October 31, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.72%, the 77th percentile. Fixed in wordpress 5.5.2.

References

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