dbcve.org
Missing AuthorizationWeakness · CWE-862

CVE-2026-49956

MEDIUM · 6.5 CVSS v3.1 Published 2026-06-09
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Hermes WebUI before version 0.51.269 contains a profile isolation bypass vulnerability that allows authenticated users to access data belonging to other profiles by querying the session search endpoint without active-profile filtering. Attackers can send requests to the sessions search handler to retrieve session titles and transcript message content from profiles other than their own active profile.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-862

The application checks who you are but not whether you're allowed to perform a given action, so any authenticated user can reach things meant for others. This is the classic “change the ID in the URL” bug. The fix is an authorization check on every request, evaluated against the acting user's permissions.

General guidance for the missing authorization class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix High confidence

Upgrade to Hermes WebUI version 0.51.269 or later

  1. Identify the current version of Hermes WebUI in use by checking the application configuration or package metadata
  2. Review the application's release notes or git tags to confirm the version is before 0.51.269
  3. Download or pull the latest release of Hermes WebUI (version 0.51.269 or later) from the official repository
  4. Stop the Hermes WebUI service before applying the update
  5. Replace the existing application files with the updated version from the release
  6. Verify the patch commit 2c7b530071bb29ae4184e83e33be5799d529568e is included in the update by reviewing the changelog or git history
  7. Restart the Hermes WebUI service
  8. Test the session search endpoint to confirm the active-profile filtering is now enforced - attempt to access a different profile's sessions and verify the request is denied

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-49956 in production — separate from our analysis above.

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