CVE-2022-41912
crewjam/saml go library is vulnerable to signature bypass via multiple Assertion elements
The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.
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
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
crewjam/saml go library is vulnerable to signature bypass via multiple Assertion elements
The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.
- Record
CVE-2022-41912- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2022-7368
The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.
- Record
EUVD-2022-7368- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-j2jp-wvqg-wc2g
crewjam/saml vulnerable to signature bypass via multiple Assertion elements due to improper authentication
Impact
The crewjam/saml go library is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements.
Patches
This issue has been corrected in version 0.4.9.
Credit
This issue was reported by Felix Wilhelm from Google Project Zero.
- Record
GHSA-j2jp-wvqg-wc2g- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
NVD
The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.
- Record
CVE-2022-41912- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
crewjam/saml go library is vulnerable to signature bypass via multiple Assertion elements
The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.
- Record
CVE-2022-41912- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVGHSA-j2jp-wvqg-wc2g
crewjam/saml vulnerable to signature bypass via multiple Assertion elements due to improper authentication
Impact
The crewjam/saml go library is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements.
Patches
This issue has been corrected in version 0.4.9.
Credit
This issue was reported by Felix Wilhelm from Google Project Zero.
- Record
GHSA-j2jp-wvqg-wc2g- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2022-41912
The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.
- Record
UBUNTU-CVE-2022-41912- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGO-2022-1129 No score
Authentication bypass in github.com/crewjam/saml
Authentication bypass is possible when processing SAML responses containing multiple Assertion elements.
- Record
GO-2022-1129- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/crewjam/samlGo |
before 0.4.9 | 0.4.9 |
golang-github-crewjam-samlUbuntu:22.04:LTS |
All versions, plus listed versions 0.4.5+git20201228.07f15a6-20.4.6-10.4.6-2 |
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-2022-41912 is a critical vulnerability (CVSS 9.1) in Crewjam Saml, published November 28, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.34%, the 83rd percentile. Fixed in github.com/crewjam/saml 0.4.9.
References
github.com/crewjam/saml/security/advisories/GHSA-j2jp-wvqg-wc2g
packetstormsecurity.com/files/170356/crewjam-saml-Signature-Bypass.html
nvd.nist.gov/vuln/detail/CVE-2022-41912