← Vulnerability feed

Vulnerability record · CVE-2026-75542 · published 24 August 2026

CVE-2026-75542: Incorrect authorization vulnerability

Incorrect Authorization vulnerability in the OAuth token endpoint in hexpm hexpm allows an API key holding the repositories permission to read another organization's private packages. When an API key is exchanged for a token through the OAuth client_credentials grant, validate_scopes_against_key/2 in lib/hexpm_web/controllers/api/oauth_controller.ex admits a requested scope whenever the key carries the repositories permission and the scope string begins with repository:. The organization name is never resolved against the principal, and expand_repositories_scope/3 only rewrites the literal repositories scope, so an explicit repository:<name> passes through untouched. Both CDN edges authorize repository access from the token claim without querying the database, so the minted token is read access to that organization's private packages until it expires. This issue affects hex.pm: from 2025-10-18 before 2026-08-24.

8.3 CVSS 4.0 High EPSS 0.46% · top 62.3% CWE-863 · Incorrect authorization Deferred
8.3CVSS 4.0 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
1 Sep 2026Last modified by NVD

Description

Incorrect Authorization vulnerability in the OAuth token endpoint in hexpm hexpm allows an API key holding the repositories permission to read another organization's private packages. When an API key is exchanged for a token through the OAuth client_credentials grant, validate_scopes_against_key/2 in lib/hexpm_web/controllers/api/oauth_controller.ex admits a requested scope whenever the key carries the repositories permission and the scope string begins with repository:. The organization name is never resolved against the principal, and expand_repositories_scope/3 only rewrites the literal repositories scope, so an explicit repository:<name> passes through untouched. Both CDN edges authorize repository access from the token claim without querying the database, so the minted token is read access to that organization's private packages until it expires. This issue affects hex.pm: from 2025-10-18 before 2026-08-24.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://cna.erlef.org/cves/CVE-2026-75542.html
https://github.com/hexpm/hexpm/commit/bf0fb9d208f0acfabf7a2f7467c8231659e322a8
https://github.com/hexpm/hexpm/security/advisories/GHSA-rfx8-w654-8cpr
https://osv.dev/vulnerability/EEF-CVE-2026-75542
https://github.com/hexpm/hexpm/security/advisories/GHSA-rfx8-w654-8cpr

Track CVE-2026-75542 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-71362Adobe commerce incorrect authorization vulnerabilityAdobe Commerce is affected by an Incorrect Authorization vulnerability that could result in privilege escalation. An attacker could leverage this vul…KEVEPSS 88%8.8CVE-2026-42016JFrog Artifactory token scope bypass enables privilege escalationJFrog Artifactory (Self Hosted) before 7.133.11 validates a token's signature and issuer but not its scope, so a token can be used for actions beyond…KEVEPSS 8.6%analysed10.0CVE-2025-54253Adobe Experience Manager Forms misconfiguration allows pre-auth code executionAdobe Experience Manager Forms 6.5.23 and earlier contain a misconfiguration (CWE-863, incorrect authorization) that lets an attacker bypass security…KEVEPSS 88%analysed5.4CVE-2025-55177WhatsApp iOS and Mac linked-device sync authorization flawWhatsApp for iOS, WhatsApp Business for iOS and WhatsApp for Mac fail to fully authorize linked-device synchronization messages, letting an unrelated…KEVEPSS 4.3%analysed8.6CVE-2025-21480Qualcomm GPU micronode memory corruption via unauthorized command executionA memory corruption flaw in Qualcomm's GPU micronode is caused by incorrect authorization (CWE-863), allowing an unauthorized command sequence to be …KEVEPSS 0.46%analysed8.6CVE-2025-21479Qualcomm GPU micronode memory corruption via unauthorized command executionQualcomm chipsets contain an incorrect authorization flaw in the GPU micronode that allows memory corruption when a specific sequence of commands is …KEVEPSS 0.84%analysed6.1CVE-2025-24200Apple iOS and iPadOS authorization flaw disables USB Restricted ModeAn incorrect authorization issue in Apple iOS and iPadOS is addressed through improved state management. A physical attacker can disable USB Restrict…KEVEPSS 4.5%analysed7.5CVE-2024-21287Oracle Agile PLM Framework incorrect authorization exposes dataOracle Agile PLM Framework 9.3.6 contains an incorrect authorization flaw in the Software Development Kit / Process Extension component. An unauthent…KEVEPSS 1.7%analysed

Source: NIST National Vulnerability Database (record CVE-2026-75542), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.