CVE-2025-45765
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective...
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
CVE-2025-45765- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
EUVDEUVD-2025-23954
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
EUVD-2025-23954- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6ch4-944p-wf7j
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective...
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
GHSA-6ch4-944p-wf7j- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
NVD
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
CVE-2025-45765- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
OSV
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
CVE-2025-45765- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-45765
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
DEBIAN-CVE-2025-45765- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-45765
ruby-jwt v3.0.0.beta1 was discovered to contain weak encryption. NOTE: the Supplier's perspective is "keysize is not something that is enforced by this library. Currently more recent versions of OpenSSL are enforcing some key sizes and those restrictions apply to the users of this gem also."
- Record
UBUNTU-CVE-2025-45765- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H - Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ruby-jwtDebian:12 |
All versions, plus listed versions 2.5.0-12.7.0-12.7.0-22.7.1-13.1.2-13.2.0-1 |
None known |
ruby-jwtDebian:13 |
All versions, plus listed versions 2.7.1-13.1.2-13.2.0-1 |
None known |
ruby-jwtDebian:14 |
All versions, plus listed versions 2.7.1-13.1.2-13.2.0-1 |
None known |
ruby-jwtUbuntu:16.04:LTS |
All versions, plus listed versions 1.0.0-3 |
None known |
ruby-jwtUbuntu:18.04:LTS |
All versions, plus listed versions 1.5.6-1 |
None known |
ruby-jwtUbuntu:20.04:LTS |
All versions, plus listed versions 1.5.6-12.1.0-2 |
None known |
ruby-jwtUbuntu:22.04:LTS |
All versions, plus listed versions 2.2.2-1 |
None known |
ruby-jwtUbuntu:24.04:LTS |
All versions, plus listed versions 2.7.0-22.7.1-1 |
None known |
ruby-jwtUbuntu:25.10 |
All versions, plus listed versions 2.7.1-1 |
None known |
ruby-jwtUbuntu:26.10 |
All versions, plus listed versions 2.7.1-13.2.0-1 |
None known |
ruby-jwtUbuntu:26.04:LTS |
All versions, plus listed versions 2.7.1-1 |
None known |
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-2025-45765 is a critical vulnerability (CVSS 9.1) in ruby-jwt, published August 7, 2025. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 6th percentile.