Security readout for executives and security teams
Plain-English summary
A flaw in goshs before version 2.1.1 can let an unauthenticated remote user download files that administrators intended to protect with folder-level .goshs access rules. The reported impact is disclosure of confidential files; the sources do not report modification or service disruption.
Executive priority
Prioritize remediation for Internet-accessible instances or shares containing credentials, customer information, source code, or operational data. Upgrade promptly and investigate possible disclosure. Lower-reachability deployments still require remediation because exploitation needs no account or user action.
Technical view
The bulk ZIP-download handler in httpserver/updown.go omitted findEffectiveACL and applyCustomAuth checks. Consequently, file-based .goshs folder ACLs and block lists were bypassed. This is an incomplete-fix residual of CVE-2026-40189 and is fixed in goshs 2.1.1. CVSS 3.1 is 7.5: network-accessible, low complexity, unauthenticated, and confidentiality-only impact.
Likely exposure
Exposure is most likely where goshs versions earlier than 2.1.1 are network-reachable and rely on .goshs folder ACLs or block lists to protect sensitive files. The supplied evidence does not identify affected hosted services, deployment counts, or whether other authorization layers reduce exposure.
Exploitation context
The CVSS assessment indicates remote, low-complexity exploitation without privileges or user interaction. However, this CVE is not listed as KEV in the supplied bundle, and no cited source establishes active exploitation. Treat the accessible data and deployment reachability as the main urgency factors.
Researcher notes
This is an authorization-check omission in a specific download handler and a residual of CVE-2026-40189. Reviewers should compare authorization enforcement across all file-delivery paths, not assume the earlier fix covered adjacent handlers. The supplied sources establish the affected version boundary and fix, but provide no evidence of exploitation prevalence.
Mitigation direction
- Upgrade every affected goshs instance to version 2.1.1 or later.
- Restrict network access to affected instances until upgrading is complete.
- Remove sensitive files from reachable shares when immediate upgrading is impossible.
- Assess exposed data and rotate disclosed credentials if investigation indicates unauthorized access.
Validation and detection
- Inventory goshs deployments and record their running versions.
- Confirm all reachable instances run version 2.1.1 or later.
- Identify directories protected only by .goshs ACLs or block lists.
- Review relevant access logs for unexpected bulk-download activity.
- Perform an authorized regression check confirming protected files remain inaccessible without authentication.
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 lookupCWE-863: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-54719 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.
SSVC decision data
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:N/UI:N/S:U/C:H/I:N/A:N3.93.6GitHub_MVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/goshs-labs/goshs/security/advisories/GHSA-rmxw-pq4x-3fvhCVE reference, GitHub_M · x_refsource_CONFIRM
- https://github.com/goshs-labs/goshs/commit/7cf911a26ace737e1a55b7dc073e307a25f7fd1dCVE reference, GitHub_M · x_refsource_MISC
- https://github.com/goshs-labs/goshs/releases/tag/v2.1.1CVE reference, GitHub_M · 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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.