Mojolicious versions from 7.28 through 9.45 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default.
When creating a default app skeleton with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys.
Release 9.46 fixes the issue by providing high quality randomness, even in absence of CryptX.
Users should be aware that the update does not replace previously generated weak secrets. A secret generated with the previous version MUST be replaced to ensure the updated version is using a strong secret.
References
Configurations
History
05 Jun 2026, 14:16
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| Summary | (en) Mojolicious versions from 7.28 through 9.45 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default. When creating a default app skeleton with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys. Release 9.46 fixes the issue by providing high quality randomness, even in absence of CryptX. Users should be aware that the update does not replace previously generated weak secrets. A secret generated with the previous version MUST be replaced to ensure the updated version is using a strong secret. | |
| References |
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20 Oct 2025, 20:15
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| Summary | (en) Mojolicious versions from 7.28 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default When creating a default app skeleton with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys. |
17 Jun 2025, 14:16
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| First Time |
Mojolicious mojolicious
Mojolicious |
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| CPE | cpe:2.3:a:mojolicious:mojolicious:*:*:*:*:*:perl:*:* | |
| References | () https://github.com/hashcat/hashcat/pull/4090 - Issue Tracking, Patch | |
| References | () https://github.com/mojolicious/mojo/pull/2200 - Exploit, Issue Tracking, Patch | |
| References | () https://metacpan.org/release/SRI/Mojolicious-7.28/source/lib/Mojolicious/Command/generate/app.pm#L220 - Product | |
| References | () https://metacpan.org/release/SRI/Mojolicious-9.38/source/lib/Mojolicious/Command/Author/generate/app.pm#L202 - Product | |
| References | () https://metacpan.org/release/SRI/Mojolicious-9.39/source/lib/Mojo/Util.pm#L181 - Product | |
| References | () https://perldoc.perl.org/functions/rand - Product | |
| References | () https://security.metacpan.org/docs/guides/random-data-for-security.html - Technical Description |
12 May 2025, 19:15
| Type | Values Removed | Values Added |
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| Summary | (en) Mojolicious versions from 7.28 through 9.40 for Perl may generate weak HMAC session secrets. When creating a default app with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys. |
07 May 2025, 19:16
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.3 |
05 May 2025, 20:54
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| Summary |
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03 May 2025, 11:15
| Type | Values Removed | Values Added |
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| New CVE |
Information
Published : 2025-05-03 11:15
Updated : 2026-06-05 14:16
NVD link : CVE-2024-58135
Mitre link : CVE-2024-58135
CVE.ORG link : CVE-2024-58135
JSON object : View
Products Affected
mojolicious
- mojolicious
CWE
CWE-338
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
