Quick answers
- Is CVE-2026-53528 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-53528 being exploited in the wild.
- How severe is CVE-2026-53528?
- High severity, with a CVSS score of 8.8, published 21 August 2026.
- Which products and versions are affected?
- LeafWiki 0.3.0 through 0.10.0.
- Is there a fix for CVE-2026-53528?
- A patch was published on 2026: version 0.10.1 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-53528 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-53528?
- Check whether you run LeafWiki at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A path traversal vulnerability exists in LeafWiki's PUT /api/pages/<pageID>/assets/rename endpoint due to insufficient sanitization of the oldFilename parameter. An attacker can inject path traversal sequences such as ../ to reference and move files outside the intended asset directory. The vulnerability requires an authenticated session with editor permissions and a valid page ID, but no additional user interaction. A successful exploit allows file exfiltration, integrity compromise of critical application files (including the database), and denial of service through file manipulation. The vulnerability is fixed in version 0.10.1 and later.
Affected products
- LeafWiki LeafWiki 0.3.0 through 0.10.0
Timeline
- 2026-05-31: disclosed
- 2026-08-21: advisory
- 2026: patched: version 0.10.1 and later