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CVE-2019-19709

Possible to circumvent title-blacklist

6.1 MediumFix available

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that 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

1.56%Up 0.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.1

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
CVE-2019-19709
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
5.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness
CWE-601
Updated
2026-11-02
CVE List No score

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
CVE-2019-19709
Updated
2026-11-02
EUVDEUVD-2022-4790 No score

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
EUVD-2022-4790
Updated
2026-11-03
GitHub AdvisoriesGHSA-pjv5-vv93-p648 6.1

Possible to circumvent title-blacklist

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
GHSA-pjv5-vv93-p648
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-601
Updated
2026-11-02
OSV 6.1

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
CVE-2019-19709
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-2019-19709 6.1

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
DEBIAN-CVE-2019-19709
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
OSVGHSA-pjv5-vv93-p648 6.1

Possible to circumvent title-blacklist

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
GHSA-pjv5-vv93-p648
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-601
Updated
2026-11-02
OSVUBUNTU-CVE-2019-19709 6.1

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Record
UBUNTU-CVE-2019-19709
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
OSVMGASA-2020-0021 No score

Updated mediawiki packages fix security vulnerability

Updated mediawiki packages fix security vulnerability:

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page (CVE-2019-19709).

Record
MGASA-2020-0021
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mediawiki/core
Packagist
 1.31.0 up to 1.31.6
1.31.6
mediawiki/core
Packagist
 1.32.0 up to 1.32.6
1.32.6
mediawiki/core
Packagist
 1.33.0 up to 1.33.2
1.33.2
mediawiki/core
Packagist
 1.33.99 up to 1.34.0
1.34.0
mediawiki
Debian:12
 before 1:1.31.6-1
1:1.31.6-1
mediawiki
Debian:13
 before 1:1.31.6-1
1:1.31.6-1
mediawiki
Debian:14
 before 1:1.31.6-1
1:1.31.6-1
mediawiki
Debian:9
 before 1:1.27.7-1~deb9u3, plus listed versions
1:1.27.3-11:1.27.4-11:1.27.4-1~bpo8+11:1.27.4-1~deb9u11:1.27.4-2
Show 5 moreShow less
1:1.27.4-31:1.27.5-1~deb9u11:1.27.6-1~deb9u11:1.27.7-1~deb9u11:1.27.7-1~deb9u2
1:1.27.7-1~deb9u3
mediawiki
Debian:10
 before 1:1.31.6-1~deb10u1, plus listed versions
1:1.31.2-11:1.31.4-11:1.31.4-1~deb10u11:1.31.5-11:1.31.5-21:1.31.5-3
1:1.31.6-1~deb10u1
mediawiki/core
Packagist
 1.31.0 up to 1.31.6, plus listed versions
1.31.11.31.21.31.31.31.41.31.5
1.31.6
Show 5 moreShow less
Affected packages
PackageAffectedFixed
mediawiki/core
Packagist
 1.32.0 up to 1.32.6, plus listed versions
1.32.11.32.21.32.31.32.41.32.5
1.32.6
mediawiki/core
Packagist
 1.33.0 up to 1.33.2, plus listed versions
1.33.1
1.33.2
mediawiki/core
Packagist
 1.33.99 up to 1.34.0, plus listed versions
1.34.0-rc.01.34.0-rc.1
1.34.0
mediawiki
Mageia:7
 before 1.31.6-1.mga7
1.31.6-1.mga7
mediawiki
Ubuntu:18.04:LTS
 All versions, plus listed versions
1:1.27.3-11:1.27.4-11:1.27.4-21:1.27.4-3
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2019-19709 is a medium vulnerability (CVSS 6.1) in Mediawiki, published December 11, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.56%, the 75th percentile. Fixed in mediawiki/core 1.31.6.

References

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