CVE-2024-41107 [High] | Spoofing in Cloudstack

The CloudStack SAML authentication (disabled by default) does not enforce signature check. In CloudStack environments where SAML authentication is enabled, an attacker that initiates CloudStack SAML single sign-on authentication can bypass SAML authentication by submitting a spoofed SAML response with no signature and known or guessed username and other user details of a SAML-enabled CloudStack user-account. In such environments, this can result in a complete compromise of the resources owned and/or accessible by a SAML enabled user-account. Affected users are recommended to disable the SAML authentication plugin by setting the "saml2.enabled" global setting to "false", or upgrade to version 4.18.2.2, 4.19.1.0 or later, which addresses this issue.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	92.00%	17.76%	-74.24%
2	2026-03-25	92.33%	92.00%	-0.33%
3	2026-01-14	—	92.33%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

92.00%

17.76%

-74.24%

2026-03-25

92.33%

92.00%

-0.33%

2026-01-14

—

92.33%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.1	3.1	HIGH	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.2	5.9	[email protected]
8.1	3.1	HIGH	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.2	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.1

3.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.2

5.9

[email protected]

8.1

3.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.2

5.9

134c704f-9b21-4f2e-91b3-4a467353bcc0

Affected software / configurations for CVE-2024-41107

Vendor	Product	Version	Raw CPE
apache	cloudstack	>= 4.5.0, < 4.18.2.2	cpe:2.3:a:apache:cloudstack::::::::
apache	cloudstack	>= 4.19.0.0, < 4.19.1.0	cpe:2.3:a:apache:cloudstack::::::::

References for CVE-2024-41107

URL	Tags
http://www.openwall.com/lists/oss-security/2024/07/19/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/07/19/2	Mailing List Third Party Advisory
https://cloudstack.apache.org/blog/security-release-advisory-cve-2024-41107	Mitigation Vendor Advisory
https://github.com/apache/cloudstack/issues/4519	Issue Tracking
https://lists.apache.org/thread/5q06g8zvmhcw6w3tjr6r5prqdw6zckg3	Mailing List Vendor Advisory
https://www.shapeblue.com/shapeblue-security-advisory-apache-cloudstack-cve-2024-41107	Third Party Advisory

URL

CVE-2024-41107 | Apache CloudStack: SAML Signature Exclusion

Exploit prediction scoring system (EPSS) score for CVE-2024-41107

Common vulnerability scoring system (CVSS) metrics for CVE-2024-41107

Weakness enumeration for CVE-2024-41107

Affected software / configurations for CVE-2024-41107

References for CVE-2024-41107