Missing authorization in Piranha CMS manager language API
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
Piranha CMS through 12.2 has a missing authorization check in its language API controller (CWE-862). Any authenticated manager user can list, create, edit and delete site languages without the Language, LanguageAdd, LanguageEdit or LanguageDelete permissions. A low-privileged manager account can be used over the network to delete languages and reassign sites to the default language, which affects localized content across the whole instance.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Piranha CMS through 12.2 contains a missing authorization vulnerability in the Piranha.Manager LanguageApiController that allows any authenticated manager user to list, create, edit and delete site languages without the granular Language, LanguageAdd, LanguageEdit or LanguageDelete permissions. Attackers can call the manager/api/language Get, Save and Delete actions directly to remove languages and reassign sites to the default, affecting localized content instance-wide.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| PiranhaCMS | Piranha CMS | up to 12.2 | — | No fix listed | CNA |
- Piranha CMS VendorPiranhaCMS Affected up to 12.2 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Piranha CMS.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-111665
- 2026-10-16 Alias added: GHSA-8995-w3f5-5qpr
- 2026-10-19 CISA SSVC decision points changed
- 2026-10-19 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-111665 · CVE Program
- CVE-2026-111665 · NVD
- FIRST EPSS
- GHSA-8995-w3f5-5qpr · GitHub Advisory Database · CC BY 4.0
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