Server-side request forgery in Shaarli admin metadata endpoint
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Shaarli versions 0.16.0, 0.16.1, 0.16.2 and 0.16.3 are affected. Manipulating the url argument of the MetadataController function causes server-side request forgery (CWE-918). A remote attacker with high privileges can trigger the server to send requests to destinations the attacker chooses.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
A security flaw has been discovered in Shaarli up to 0.16.3. The affected element is the function MetadataController of the file application/front/controller/admin/MetadataController.php of the component Admin Metadata Endpoint. Performing a manipulation of the argument url results in server-side request forgery. The attack may be initiated remotely. Upgrading to version 0.16.4 is sufficient to fix this issue. The patch is named 8ca4de8e7c932a684481f5fbb1229fe16de1f4d2. It is advisable to upgrade the affected component.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Shaarli | 0.16.0; 0.16.1; 0.16.2; 0.16.3 | 0.16.4 | Patch available | CNA |
- Shaarli Vendor— Affected 0.16.0; 0.16.1; 0.16.2; 0.16.3 Fixed in 0.16.4 Patch available CNA
Remediation
Upgrade Shaarli to version 0.16.4, which fixes this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Shaarli Fixed in 0.16.4
Timeline
- 2026-10-05 Threatist record created from CVE-2026-105263
- 2026-10-05 Alias added: GHSA-2rmx-qf8h-6p5c
References
Sources
- CVE-2026-105263 · CVE Program
- CVE-2026-105263 · NVD
- FIRST EPSS
- GHSA-2rmx-qf8h-6p5c · GitHub Advisory Database · CC BY 4.0
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