Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
YesWiki versions from 4.2.0 before 4.6.6 are affected by a second-order SQL injection in the page delete API (ApiController::deletePage). An authenticated low-privilege user can create a page whose tag contains SQL fragments, link it with an include directive, and then call the delete endpoint, which runs the stored tag unescaped in a DELETE query. This allows execution of arbitrary SQL in the wiki database, including time-based data extraction. Upgrade to YesWiki 4.6.6.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.3 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0051, the 44th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:25 UTC First seen by agentprime
- 31 Oct 2026, 14:25 UTC Confirmed by OSV