CVE-2020-10959
MediaWiki Open Redirect vulnerability
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
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
What each source reports
NVD Score used
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
CVE-2020-10959- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
CVE List No score
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
CVE-2020-10959- Updated
- 2026-11-02
EUVDEUVD-2022-4609 No score
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
EUVD-2022-4609- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mqhw-wq8p-vf5r
MediaWiki Open Redirect vulnerability
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.34.0-rc.0 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
GHSA-mqhw-wq8p-vf5r- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSV
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
CVE-2020-10959- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-mqhw-wq8p-vf5r
MediaWiki Open Redirect vulnerability
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.34.0-rc.0 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
GHSA-mqhw-wq8p-vf5r- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVBIT-mediawiki-2020-10959 No score
resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.
- Record
BIT-mediawiki-2020-10959- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mediawiki/corePackagist |
before 1.34.0-rc.0 | 1.34.0-rc.0 |
mediawikiBitnami |
before 1.35.0 | 1.35.0 |
mediawiki/corePackagist |
before 1.34.0-rc.0, plus listed versions 1.20.31.20.41.20.51.20.61.20.7 Show 45 moreShow less1.20.81.21.01.21.11.21.101.21.111.21.21.21.31.21.41.21.51.21.61.21.71.21.81.21.91.22.0rc01.24.01.24.0-rc.01.24.0-rc.11.24.0-rc.21.24.0-rc.31.24.11.24.21.24.31.24.41.24.51.24.61.25.01.25.0-rc.01.25.11.25.21.25.31.25.41.25.51.25.61.26.01.26.11.26.21.26.31.26.41.27.01.27.0-rc.01.27.0-rc.11.27.11.27.21.27.31.27.4 |
1.34.0-rc.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-10959 is a medium vulnerability (CVSS 6.1) in Mediawiki, published June 2, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in mediawiki/core 1.34.0-rc.0.
References
phabricator.wikimedia.org/T232932
gerrit.wikimedia.org/r/c/mediawiki/core/+/536725
nvd.nist.gov/vuln/detail/CVE-2020-10959
github.com/wikimedia/mediawiki/commit/d4a552e65bdfd7309a9b8537e9dbe69c5e2991eb
Left out here: 55 versions. The JSON record has them.