HOMEVULNERABILITIESCVE-2020-4048
MEDIUM

CVE-2020-4048

CWE-601Published: June 12, 2020· Updated: Jun 17, 2026

5.7
CVSS v3.1

Official Description

In affected versions of WordPress, due to an issue in wp_validate_redirect() and URL sanitization, an arbitrary external link can be crafted leading to unintended/open redirect when clicked. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

NVD Source

Technical Analysis

CVE-2020-4048 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 5.7.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
WordPress1 product(s)
wordpress
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/WordPress/wordpress-develop/commit/6ef777e9a022bee2a80fa671118e7e2657e52693
PATCHhttps://github.com/WordPress/wordpress-develop/commit/6ef777e9a022bee2a80fa671118e7e2657e52693
ADVISORYhttps://github.com/WordPress/wordpress-develop/security/advisories/GHSA-q6pw-gvf4-5fj5
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/07/msg00000.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00011.html
ADVISORYhttps://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/
ADVISORYhttps://www.debian.org/security/2020/dsa-4709
ADVISORYhttps://github.com/WordPress/wordpress-develop/security/advisories/GHSA-q6pw-gvf4-5fj5
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/07/msg00000.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00011.html
ADVISORYhttps://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/
ADVISORYhttps://www.debian.org/security/2020/dsa-4709

All References (16)

→
https://github.com/WordPress/wordpress-develop/commit/6ef777e9a022bee2a80fa671118e7e2657e52693Patch
→
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-q6pw-gvf4-5fj5Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00000.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/09/msg00011.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/
→
https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/Release Notes · Vendor Advisory
→
https://www.debian.org/security/2020/dsa-4709Mailing List · Third Party Advisory
→
https://github.com/WordPress/wordpress-develop/commit/6ef777e9a022bee2a80fa671118e7e2657e52693Patch
→
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-q6pw-gvf4-5fj5Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/07/msg00000.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/09/msg00011.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/
→
https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/Release Notes · Vendor Advisory

Quick Facts

CVE IDCVE-2020-4048
CVSS Score5.7 / 10
SeverityMEDIUM
WeaknessCWE-601
CISA KEVNo
Affected3 vendor(s)
PublishedJun 12, 2020

Related CVEs (CWE-601)

CVE-2025-55031
9.8
CVE-2022-31657
9.8
CVE-2024-22891
9.8
CVE-2022-40083
9.6
CVE-2026-61451
9.6
CVE-2026-6795
9.6

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-4048 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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