Bug 2512896
| Summary: | CVE-2026-71438 nextcloud: Mermaid: Prototype pollution vulnerability via configuration APIs [epel-all] | ||
|---|---|---|---|
| Product: | [Fedora] Fedora EPEL | Reporter: | Ganesh <gnaik> |
| Component: | nextcloud | Assignee: | Andrew Bauer <zonexpertconsulting> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | epel10 | CC: | pampelmuse, zonexpertconsulting |
| Target Milestone: | --- | Keywords: | Security, SecurityTracking |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | {"flaws": ["5fa9ca30-8abc-485c-b41c-95b818470b84"]} | ||
| Fixed In Version: | nextcloud-34.0.3-1.el10_2 nextcloud-34.0.3-1.fc44 nextcloud-34.0.3-1.el10_3 nextcloud-34.0.3-1.fc43 | Doc Type: | --- |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2026-08-25 00:27:58 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 2512216 | ||
FEDORA-EPEL-2026-b2421df34a (nextcloud-34.0.3-1.el10_3) has been submitted as an update to Fedora EPEL 10.3. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-b2421df34a FEDORA-2026-a1368a72b4 (nextcloud-34.0.3-1.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-a1368a72b4 FEDORA-2026-625cbe86c8 (nextcloud-34.0.3-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-625cbe86c8 FEDORA-EPEL-2026-15025fbfe6 (nextcloud-34.0.3-1.el10_2) has been submitted as an update to Fedora EPEL 10.2. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-15025fbfe6 FEDORA-EPEL-2026-15025fbfe6 has been pushed to the Fedora EPEL 10.2 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-15025fbfe6 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2026-a1368a72b4 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-a1368a72b4` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a1368a72b4 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-EPEL-2026-b2421df34a has been pushed to the Fedora EPEL 10.3 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-b2421df34a See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2026-625cbe86c8 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-625cbe86c8` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-625cbe86c8 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-EPEL-2026-15025fbfe6 (nextcloud-34.0.3-1.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2026-a1368a72b4 (nextcloud-34.0.3-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-EPEL-2026-b2421df34a (nextcloud-34.0.3-1.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2026-625cbe86c8 (nextcloud-34.0.3-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report. |
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.8 and 11.16.1, Mermaid's configuration setters (mermaid.initialize, mermaidAPI.setConfig, and mermaidAPI.updateSiteConfig) merge caller-supplied configuration into Mermaid's internal config using the assignWithDepth deep-merge helper, which is vulnerable to prototype pollution. This is only exploitable if an application forwards untrusted data directly into one of these configuration entry points, which is outside their documented usage; diagram-supplied configuration (e.g. %%{init: {}}%% or YAML frontmatter) is not affected. This issue is fixed in versions 10.9.8 and 11.16.1.