CVE-2017-8814
The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by "a lot of junk."
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attackers to replace text inside tags via a rule definition followed by "a lot of junk."
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.61% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- mediawiki/mediawiki · debian/debian linux
- Source
- security@debian.org
EPSS 1.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securitytracker.com/id/1039812Third Party Advisory, VDB Entry
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.htmlMailing List, Patch, Vendor Advisory
- https://www.debian.org/security/2017/dsa-4036Third Party Advisory
- http://www.securitytracker.com/id/1039812Third Party Advisory, VDB Entry
- https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.htmlMailing List, Patch, Vendor Advisory
- https://www.debian.org/security/2017/dsa-4036Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.