CVE-2019-10755
Use of Cryptographically Weak Pseudo-Random Number Generator in org.pac4j:pac4j-saml
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
- Record
CVE-2019-10755- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-338
- Updated
- 2026-11-02
CVE List No score
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
- Record
CVE-2019-10755- Updated
- 2026-11-02
EUVDEUVD-2019-0762 No score
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
- Record
EUVD-2019-0762- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rc75-cf5c-mxvh
Use of Cryptographically Weak Pseudo-Random Number Generator in org.pac4j:pac4j-saml
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
- Record
GHSA-rc75-cf5c-mxvh- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-338
- Updated
- 2026-11-02
OSV
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
- Record
CVE-2019-10755- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-rc75-cf5c-mxvh
Use of Cryptographically Weak Pseudo-Random Number Generator in org.pac4j:pac4j-saml
The SAML identifier generated within SAML2Utils.java was found to make use of the apache commons-lang3 RandomStringUtils class which makes them predictable due to RandomStringUtils PRNG's algorithm not being cryptographically strong. This issue only affects the 3.X release of pac4j-saml.
- Record
GHSA-rc75-cf5c-mxvh- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-338
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.pac4j:pac4j-samlMaven |
before 3.8.2 | 3.8.2 |
org.pac4j:pac4j-samlMaven |
before 3.8.2, plus listed versions 1.5.01.5.11.6.01.6.0-RC11.7.0 Show 45 moreShow less1.7.11.7.21.8.01.8.0-RC11.8.11.8.21.8.31.8.41.8.51.8.61.8.71.8.81.8.91.9.01.9.11.9.21.9.31.9.41.9.51.9.61.9.71.9.81.9.92.0.02.0.0-RC12.0.0-RC22.1.02.2.02.2.12.3.02.3.13.0.03.0.0-RC13.0.0-RC23.0.13.0.23.1.03.2.03.3.03.4.03.5.03.6.03.6.13.7.03.8.0 |
3.8.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-10755 is a medium vulnerability (CVSS 4.9) in Pac4j, published September 23, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.13%, the 66th percentile. Fixed in org.pac4j:pac4j-saml 3.8.2.
References
Left out here: 1 version. The JSON record has them.