Security readout for executives and security teams
Plain-English summary
CVE-2026-27792 affects Seerr, a media request and discovery manager. In versions 2.7.0 through before 3.1.0, logged-in users could access or change push subscription data belonging to other users. This is a privacy and integrity issue, not a full system takeover based on current public information.
Executive priority
Treat this as a near-term hygiene fix. It does not appear critical, but it can expose or alter user-specific subscription data in affected Seerr deployments. Upgrade during the next normal maintenance window, sooner for internet-facing or broadly shared instances.
Technical view
The vulnerability is a missing authorization check, tracked as CWE-862. Several push subscription API routes lacked the isOwnProfileOrAdmin() middleware, allowing authenticated non-admin users to interact with other users’ data. CVSS 3.1 score is 5.4: network-accessible, low complexity, low privileges required, no user interaction, with low confidentiality and integrity impact.
Likely exposure
Exposure is limited to Seerr deployments running versions >= 2.7.0 and < 3.1.0. The attacker must be authenticated. Risk is higher where Seerr is reachable by many users or exposed beyond a trusted household or administrative group.
Exploitation context
The source bundle does not indicate active exploitation, and this CVE is not listed as KEV. Public information supports an authenticated authorization-bypass scenario affecting push subscription data only. No evidence was provided for unauthenticated exploitation, privilege escalation to admin, or availability impact.
Researcher notes
The advisory attributes the issue to missing isOwnProfileOrAdmin() middleware on push subscription API routes. The fix is associated with Seerr v3.1.0 and commit 946bdecec524b4e7f8aaf8f2b3856f319a3580c1. Validate authorization behavior without publishing exploit details or route-level abuse instructions.
Mitigation direction
- Upgrade Seerr to version 3.1.0 or later.
- Review the GitHub security advisory for vendor guidance.
- Limit Seerr access to trusted users until upgraded.
- Remove or restrict unnecessary user accounts where practical.
Validation and detection
- Inventory Seerr instances and record deployed versions.
- Flag versions >= 2.7.0 and < 3.1.0 as affected.
- Confirm upgraded systems report version 3.1.0 or later.
- Review user access to Seerr for unnecessary authenticated accounts.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-27792 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/seerr-team/seerr/security/advisories/GHSA-gx3h-3jg5-q65fCVE reference · x_refsource_CONFIRM
- https://github.com/seerr-team/seerr/commit/946bdecec524b4e7f8aaf8f2b3856f319a3580c1CVE reference · x_refsource_MISC
- https://github.com/seerr-team/seerr/releases/tag/v3.1.0CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.