CVE-2025-40915
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens.
That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens.
That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.
- Record
CVE-2025-40915- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-338
- Updated
- 2026-11-02
EUVDEUVD-2025-18132
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens.
That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.
- Record
EUVD-2025-18132- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mqr9-mgqq-52rq
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF...
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens.
That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.
- Record
GHSA-mqr9-mgqq-52rq- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-338
- Updated
- 2026-11-02
NVD
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens.
That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.
- Record
CVE-2025-40915- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-338
- Updated
- 2026-11-02
OSV
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens
Mojolicious::Plugin::CSRF 1.03 for Perl uses a weak random number source for generating CSRF tokens.
That version of the module generates tokens as an MD5 of the process id, the current time, and a single call to the built-in rand() function.
- Record
CVE-2025-40915- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L - Weakness
- CWE-338
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-40915 is a high vulnerability (CVSS 7.0) in Gryphon Mojolicious::plugin::csrf, published June 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. No source names a fixed version.
References
metacpan.org/release/GRYPHON/Mojolicious-Plugin-CSRF-1.04/diff/GRYPHON/Mojolicious-Plugin-CSRF-1.03
nvd.nist.gov/vuln/detail/CVE-2025-40915
github.com/advisories/GHSA-mqr9-mgqq-52rq
cpan.org/modules