CVE-2024-1735
Armeria SAML authentication bypass due to missing validation on unsigned SAML messages
A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
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
A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
- Record
CVE-2024-1735- 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-2024-0511
A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
- Record
EUVD-2024-0511- 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-4m6j-23p2-8c54
Armeria SAML authentication bypass due to missing validation on unsigned SAML messages
Impact
The SAML implementation provided by armeria-saml currently accepts unsigned SAML messages (assertions, logout requests, etc.) as they are, rather than rejecting them by default. As a result, an attacker can forge a SAML message to authenticate themselves, despite the fact that such an unsigned SAML message should be rejected.
Patches
The vulnerability has been patched in Armeria version 1.27.2. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
Workarounds
There is no known workaround for this vulnerability.
References
- Record
GHSA-4m6j-23p2-8c54- 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-304
- Updated
- 2026-11-02
NVD
A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
- Record
CVE-2024-1735- 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
OSV
A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
- Record
CVE-2024-1735- 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
OSVGHSA-4m6j-23p2-8c54
Armeria SAML authentication bypass due to missing validation on unsigned SAML messages
Impact
The SAML implementation provided by armeria-saml currently accepts unsigned SAML messages (assertions, logout requests, etc.) as they are, rather than rejecting them by default. As a result, an attacker can forge a SAML message to authenticate themselves, despite the fact that such an unsigned SAML message should be rejected.
Patches
The vulnerability has been patched in Armeria version 1.27.2. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later.
Workarounds
There is no known workaround for this vulnerability.
References
- Record
GHSA-4m6j-23p2-8c54- 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-304
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.linecorp.armeria:armeria-samlMaven |
through 1.27.1 | 1.27.2 |
com.linecorp.armeria:armeria-samlMaven |
before 1.27.2, plus listed versions 0.69.00.70.00.70.10.71.00.71.1 Show 45 moreShow less0.72.00.73.00.74.00.74.10.75.00.76.00.76.10.76.20.77.00.78.00.78.10.78.20.79.00.80.00.81.00.81.10.82.00.83.00.84.00.85.00.86.00.87.00.88.00.89.00.89.10.90.00.90.10.90.20.90.30.91.00.92.00.93.00.94.00.95.00.96.00.97.00.98.00.98.10.98.20.98.30.98.40.98.50.98.60.98.70.99.0 |
1.27.2 |
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-2024-1735 is a critical vulnerability (CVSS 9.1) in Line Corporation Armeria, published February 26, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. Fixed in com.linecorp.armeria:armeria-saml 1.27.2.
References
github.com/line/armeria/security/advisories/GHSA-4m6j-23p2-8c54
nvd.nist.gov/vuln/detail/CVE-2024-1735
Left out here: 67 versions. The JSON record has them.