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6 vulnerabilities by hexpm
CVE-2026-23940 (GCVE-0-2026-23940)
Vulnerability from cvelistv5 – Published: 2026-03-13 16:07 – Updated: 2026-03-17 04:00
VLAI?
Title
Denial of Service via Oversized Package Upload
Summary
Uncontrolled Resource Consumption vulnerability in hexpm hexpm/hexpm allows Excessive Allocation. Publishing an oversized package can cause Hex.pm to run out of memory while extracting the uploaded package tarball. This can terminate the affected application instance and result in a denial of service for package publishing and potentially other package-processing functionality.
This issue affects hexpm: before 495f01607d3eae4aed7ad09b2f54f31ec7a7df01; hex.pm: before 2026-03-10.
Severity ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Credits
Joud Zakharia / zentrust partners GmbH
Eric Meadows-Jönsson / Hex.pm
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CVE-2026-21622 (GCVE-0-2026-21622)
Vulnerability from cvelistv5 – Published: 2026-03-05 21:18 – Updated: 2026-03-10 21:36
VLAI?
Title
Password Reset Tokens Do Not Expire
Summary
Insufficient Session Expiration vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Accounts.PasswordReset' module) allows Account Takeover.
Password reset tokens generated via the "Reset your password" flow do not expire. When a user requests a password reset, Hex sends an email containing a reset link with a token. This token remains valid indefinitely until used. There is no time-based expiration enforced.
If a user's historical emails are exposed through a data breach (e.g., a leaked mailbox archive), any unused password reset email contained in that dataset could be used by an attacker to reset the victim's password. The attacker does not need current access to the victim's email account, only access to a previously leaked copy of the reset email.
This vulnerability is associated with program files lib/hexpm/accounts/password_reset.ex and program routines 'Elixir.Hexpm.Accounts.PasswordReset':can_reset?/3.
This issue affects hexpm: from 617e44c71f1dd9043870205f371d375c5c4d886d before bb0e42091995945deef10556f58d046a52eb7884.
Severity ?
CWE
- CWE-613 - Insufficient Session Expiration
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| hexpm | hexpm |
Affected:
617e44c71f1dd9043870205f371d375c5c4d886d , < bb0e42091995945deef10556f58d046a52eb7884
(git)
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||
Credits
Michael Lubas / Paraxial.io
Jonatan Männchen / EEF
Eric Meadows-Jönsson / Hex.pm
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CVE-2026-21621 (GCVE-0-2026-21621)
Vulnerability from cvelistv5 – Published: 2026-03-05 19:20 – Updated: 2026-03-07 03:48
VLAI?
Title
Improper Scope Enforcement in OAuth client_credentials Flow Allows Read-Only API Key to Escalate to Full Access
Summary
Incorrect Authorization vulnerability in hexpm hexpm/hexpm ('Elixir.HexpmWeb.API.OAuthController' module) allows Privilege Escalation.
An API key created with read-only permissions (domain: "api", resource: "read") can be escalated to full write access under specific conditions.
When exchanging a read-only API key via the OAuth client_credentials grant, the resource qualifier is ignored. The resulting JWT receives the broad "api" scope instead of the expected "api:read" scope. This token is therefore treated as having full API access.
If an attacker is able to obtain a victim's read-only API key and a valid 2FA (TOTP) code for the victim account, they can use the incorrectly scoped JWT to create a new full-access API key with unrestricted API permissions that does not expire by default and can perform write operations such as publishing, retiring, or modifying packages.
This vulnerability is associated with program files lib/hexpm_web/controllers/api/oauth_controller.ex and program routines 'Elixir.HexpmWeb.API.OAuthController':validate_scopes_against_key/2.
This issue affects hexpm: from 71829cb6f6559bcceb1ef4e43a2fb8cdd3af654b before 71c127afebb7ed7cc637eb231b98feb802d62999.
Severity ?
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| hexpm | hexpm |
Affected:
71829cb6f6559bcceb1ef4e43a2fb8cdd3af654b , < 71c127afebb7ed7cc637eb231b98feb802d62999
(git)
Affected: pkg:github/hexpm/hexpm@71829cb6f6559bcceb1ef4e43a2fb8cdd3af654b , < pkg:github/hexpm/hexpm@71c127afebb7ed7cc637eb231b98feb802d62999 (purl) cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:* |
||
Credits
Michael Lubas / Paraxial.io
Jonatan Männchen / EEF
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CVE-2026-21619 (GCVE-0-2026-21619)
Vulnerability from cvelistv5 – Published: 2026-02-27 17:57 – Updated: 2026-02-28 03:47
VLAI?
Title
Unsafe Deserialization of Erlang Terms in hex_core
Summary
Uncontrolled Resource Consumption, Deserialization of Untrusted Data vulnerability in hexpm hex_core (hex_api modules), hexpm hex (mix_hex_api modules), erlang rebar3 (r3_hex_api modules) allows Object Injection, Excessive Allocation. This vulnerability is associated with program files src/hex_api.erl, src/mix_hex_api.erl, apps/rebar/src/vendored/r3_hex_api.erl and program routines hex_core:request/4, mix_hex_api:request/4, r3_hex_api:request/4.
This issue affects hex_core: from 0.1.0 before 0.12.1; hex: from 2.3.0 before 2.3.2; rebar3: from 3.9.1 before 3.27.0.
Severity ?
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hexpm | hex_core |
Affected:
eb327f8edfe45507351e38cc0805aa12fa647f0b , < cdf726095bca85ad2549d146df1e831ae93c2b13
(git)
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:* |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
Credits
Michael Lubas / Paraxial.ia
Jonatan Männchen / EEF
Eric Meadows-Jönsson / Hex.pm
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CVE-2026-23939 (GCVE-0-2026-23939)
Vulnerability from cvelistv5 – Published: 2026-02-26 19:41 – Updated: 2026-02-27 03:57
VLAI?
Title
Path Traversal in Local File Store Backend
Summary
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Store.Local' module) allows Relative Path Traversal. This vulnerability is associated with program files lib/hexpm/store/local.ex and program routines 'Elixir.Hexpm.Store.Local':get/3, 'Elixir.Hexpm.Store.Local':put/4, 'Elixir.Hexpm.Store.Local':delete/2, 'Elixir.Hexpm.Store.Local':delete_many/2.
This issue does NOT affect hex.pm the service. Only self-hosted deployments using the Local Storage backend are affected.
This issue affects hexpm: from 931ee0ed46fa89218e0400a4f6e6d15f96406050 before 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0.
Severity ?
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| hexpm | hexpm |
Affected:
931ee0ed46fa89218e0400a4f6e6d15f96406050 , < 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0
(git)
Affected: pkg:github/hexpm/hexpm@931ee0ed46fa89218e0400a4f6e6d15f96406050 , < pkg:github/hexpm/hexpm@5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0 (purl) cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:* |
Credits
Michael Lubas / Paraxial.io
Jonatan Männchen / EEF
Eric Meadows-Jönsson / Hex.pm
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CVE-2026-21618 (GCVE-0-2026-21618)
Vulnerability from cvelistv5 – Published: 2026-01-19 14:22 – Updated: 2026-01-21 03:45
VLAI?
Title
Cross-site scripting (XSS) in OAuth Device Authorization screen
Summary
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in hexpm hexpm/hexpm ('Elixir.HexpmWeb.SharedAuthorizationView' modules) allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/hexpm_web/views/shared_authorization_view.ex and program routines 'Elixir.HexpmWeb.SharedAuthorizationView':render_grouped_scopes/3.
This issue affects hexpm: from 617e44c71f1dd9043870205f371d375c5c4d886d before c692438684ead90c3bcbfb9ccf4e63c768c668a8, from pkg:github/hexpm/hexpm@617e44c71f1dd9043870205f371d375c5c4d886d before pkg:github/hexpm/hexpm@c692438684ead90c3bcbfb9ccf4e63c768c668a8; hex.pm: from 2025-10-01 before 2026-01-19.
Severity ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| hexpm | hexpm |
Affected:
617e44c71f1dd9043870205f371d375c5c4d886d , < c692438684ead90c3bcbfb9ccf4e63c768c668a8
(git)
Affected: pkg:github/hexpm/hexpm@617e44c71f1dd9043870205f371d375c5c4d886d , < pkg:github/hexpm/hexpm@c692438684ead90c3bcbfb9ccf4e63c768c668a8 (purl) cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:* |
||
Credits
Joud Zakharia / zentrust partners GmbH
Jonatan Männchen / EEF
Eric Meadows-Jönsson / Hex.pm
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