The wikitext parser in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allows remote attackers to cause a denial of service…

Description

The wikitext parser in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allows remote attackers to cause a denial of service (infinite loop) via certain input, as demonstrated by the padleft function.

Scores

EPSS (exploitation in 30 days)

1.9% · top 21% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (8)

• [oss-security] 20120323 CVEs for MediaWiki security and maintenance release 1.18.2 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [MediaWiki-announce] 20120322 MediaWiki security and maintenance release 1.18.2 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 48504 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://bugzilla.wikimedia.org/show_bug.cgi?id=35315 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://bugzilla.wikimedia.org/show_bug.cgi?id=22555 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [MediaWiki-announce] 20120322 MediaWiki security and maintenance release 1.17.3 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [oss-security] 20120322 MediaWiki security and maintenance release 1.18.2 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 52689 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Record last updated 16 Sept 2024, 23:51 UTC.