Is CVE-2026-102927 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-102927 being exploited in the wild.

How severe is CVE-2026-102927?

Informational severity, published 5 November 2026.

Is there a fix for CVE-2026-102927?

Yes: fixed in 1.11.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-102927 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-102927?

Check whether you run HedgeDoc 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.

CVE-2026-102927: HedgeDoc permission handler improper validation

CVE-2026-102927 · Severity: info · Published 2026-11-05

HedgeDoc is a collaborative markdown note-taking application that allows users to share notes with different permission levels. A flaw in the permission handler allows a note owner to set permission values that fall outside the normal restrictions, which could make notes readable or writable more broadly than intended. However, since only the owner can change note permissions and they already have full access to their own notes, the practical security impact is limited.

Technologies: HedgeDoc. Vendors: HedgeDoc.

Quick answers

Is CVE-2026-102927 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-102927 being exploited in the wild.
How severe is CVE-2026-102927?: Informational severity, published 5 November 2026.
Which products and versions are affected?: HedgeDoc before 1.11.1.
Is there a fix for CVE-2026-102927?: Yes: fixed in 1.11.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-102927 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-102927?: Check whether you run HedgeDoc 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.

How to fix

Fixed in: 1.11.1

Technical details

The WebSocket permission handler in HedgeDoc prior to 1.11.1 fails to validate that permission values are within the set of allowed values (freely, editable, limited, locked, protected, private), allowing a note owner to submit arbitrary permission strings. The viewing and editing permission checks only handle known values and fall through to permissive defaults for unknown values. SQLite can persist invalid values because the database column lacks strict enforcement, while MySQL and PostgreSQL reject updates but leave in-memory state inconsistent.

Affected products

HedgeDoc HedgeDoc before 1.11.1

Timeline

2026-11-05: disclosed

References

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